Wikipedia:Coverage of Mathworld topics/D
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- Dürer's Conchoid ({{MathWorld | urlname=DuerersConchoid | title=Dürer's Conchoid}}): Dürer's conchoid
- Dürer's Magic Square ({{MathWorld | urlname=DuerersMagicSquare | title=Dürer's Magic Square}}): Dürer's magic square
- Dürer's Shell Curve ({{MathWorld | urlname=DuerersShellCurve | title=Dürer's Shell Curve}}): Dürer's shell curve
- Dürer's Solid ({{MathWorld | urlname=DuerersSolid | title=Dürer's Solid}}): Dürer's solid
- d'Alembert Ratio Test ({{MathWorld | urlname=dAlembertRatioTest | title=d'Alembert Ratio Test}}): D'alembert ratio test
- d'Alembert's Equation ({{MathWorld | urlname=dAlembertsEquation | title=d'Alembert's Equation}}): D'alembert's equation
- d'Alembert's Solution ({{MathWorld | urlname=dAlembertsSolution | title=d'Alembert's Solution}}): D'alembert's solution
- d'Alembert's Theorem ({{MathWorld | urlname=dAlembertsTheorem | title=d'Alembert's Theorem}}): D'alembert's theorem
- d'Alembertian ({{MathWorld | urlname=dAlembertian | title=d'Alembertian}}): D'alembertian
- d'Ocagne's Identity ({{MathWorld | urlname=dOcagnesIdentity | title=d'Ocagne's Identity}}): D'ocagne's identity
- d-Analog ({{MathWorld | urlname=d-Analog | title=d-Analog}}): D-analog
- D-Number ({{MathWorld | urlname=D-Number | title=D-Number}}): D-number
- D-Statistic ({{MathWorld | urlname=D-Statistic | title=D-Statistic}}): D-statistic
- D-Triangle ({{MathWorld | urlname=D-Triangle | title=D-Triangle}}): D-triangle
- DAG ({{MathWorld | urlname=DAG | title=DAG}}): Dag
- Dagger ({{MathWorld | urlname=Dagger | title=Dagger}}): Dagger
- Daisy ({{MathWorld | urlname=Daisy | title=Daisy}}): Daisy
- Damped Exponential Cosine Integral ({{MathWorld | urlname=DampedExponentialCosineIntegral | title=Damped Exponential Cosine Integral}}): Damped exponential cosine integral
- Damped Simple Harmonic Motion ({{MathWorld | urlname=DampedSimpleHarmonicMotion | title=Damped Simple Harmonic Motion}}): Damped simple harmonic motion
- Damped Simple Harmonic Motion--Critical Damping ({{MathWorld | urlname=DampedSimpleHarmonicMotionCriticalDamping | title=Damped Simple Harmonic Motion--Critical Damping}}): Damped simple harmonic motion--critical damping
- Damped Simple Harmonic Motion--Overdamping ({{MathWorld | urlname=DampedSimpleHarmonicMotionOverdamping | title=Damped Simple Harmonic Motion--Overdamping}}): Damped simple harmonic motion--overdamping
- Damped Simple Harmonic Motion--Underdamping ({{MathWorld | urlname=DampedSimpleHarmonicMotionUnderdamping | title=Damped Simple Harmonic Motion--Underdamping}}): Damped simple harmonic motion--underdamping
- Dandelin Spheres ({{MathWorld | urlname=DandelinSpheres | title=Dandelin Spheres}}): Dandelin spheres
- Danielson-Lanczos Lemma ({{MathWorld | urlname=Danielson-LanczosLemma | title=Danielson-Lanczos Lemma}}): Danielson-lanczos lemma
- Darboux Cubic ({{MathWorld | urlname=DarbouxCubic | title=Darboux Cubic}}): Darboux cubic
- Darboux Integral ({{MathWorld | urlname=DarbouxIntegral | title=Darboux Integral}}): Darboux integral
- Darboux Problem ({{MathWorld | urlname=DarbouxProblem | title=Darboux Problem}}): Darboux problem
- Darboux Vector ({{MathWorld | urlname=DarbouxVector | title=Darboux Vector}}): Darboux vector
- Darboux's Formula ({{MathWorld | urlname=DarbouxsFormula | title=Darboux's Formula}}): Darboux's formula
- Darboux-Stieltjes Integral ({{MathWorld | urlname=Darboux-StieltjesIntegral | title=Darboux-Stieltjes Integral}}): Darboux-stieltjes integral
- Darling's Products ({{MathWorld | urlname=DarlingsProducts | title=Darling's Products}}): Darling's products
- Dart ({{MathWorld | urlname=Dart | title=Dart}}): Dart
- Dart Graph ({{MathWorld | urlname=DartGraph | title=Dart Graph}}): Dart graph
- Darwin's Expansions ({{MathWorld | urlname=DarwinsExpansions | title=Darwin's Expansions}}): Darwin's expansions
- Darwin-de Sitter Spheroid ({{MathWorld | urlname=Darwin-deSitterSpheroid | title=Darwin-de Sitter Spheroid}}): Darwin-de sitter spheroid
- Dash ({{MathWorld | urlname=Dash | title=Dash}}): Dash
- Data Cube ({{MathWorld | urlname=DataCube | title=Data Cube}}): Data cube
- Data Structure ({{MathWorld | urlname=DataStructure | title=Data Structure}}): Data structure
- Database ({{MathWorld | urlname=Database | title=Database}}): Database
- Daubechies Wavelet Filter ({{MathWorld | urlname=DaubechiesWaveletFilter | title=Daubechies Wavelet Filter}}): Daubechies wavelet filter
- Davenport Constant ({{MathWorld | urlname=DavenportConstant | title=Davenport Constant}}): Davenport constant
- Davenport-Schinzel Sequence ({{MathWorld | urlname=Davenport-SchinzelSequence | title=Davenport-Schinzel Sequence}}): Davenport-schinzel sequence
- Davey-Stewartson Equations ({{MathWorld | urlname=Davey-StewartsonEquations | title=Davey-Stewartson Equations}}): Davey-stewartson equations
- Dawson's Integral ({{MathWorld | urlname=DawsonsIntegral | title=Dawson's Integral}}): Dawson's integral
- dc ({{MathWorld | urlname=dc | title=dc}}): Dc
- de Bruijn Constant ({{MathWorld | urlname=deBruijnConstant | title=de Bruijn Constant}}): De bruijn constant
- de Bruijn Diagram ({{MathWorld | urlname=deBruijnDiagram | title=de Bruijn Diagram}}): De bruijn diagram
- de Bruijn Graph ({{MathWorld | urlname=deBruijnGraph | title=de Bruijn Graph}}): De bruijn graph
- de Bruijn Sequence ({{MathWorld | urlname=deBruijnSequence | title=de Bruijn Sequence}}): De bruijn sequence
- de Bruijn's Theorem ({{MathWorld | urlname=deBruijnsTheorem | title=de Bruijn's Theorem}}): De bruijn's theorem
- de Bruijn-Erdős Theorem ({{MathWorld | urlname=deBruijn-ErdosTheorem | title=de Bruijn-Erdős Theorem}}): De bruijn-erdős theorem
- de Bruijn-Newman Constant ({{MathWorld | urlname=deBruijn-NewmanConstant | title=de Bruijn-Newman Constant}}): De bruijn-newman constant
- de Gua's Theorem ({{MathWorld | urlname=deGuasTheorem | title=de Gua's Theorem}}): De gua's theorem
- de la Loubere's Method ({{MathWorld | urlname=delaLouberesMethod | title=de la Loubere's Method}}): De la loubere's method
- de Longchamps Circle ({{MathWorld | urlname=deLongchampsCircle | title=de Longchamps Circle}}): De longchamps circle
- de Longchamps Ellipse ({{MathWorld | urlname=deLongchampsEllipse | title=de Longchamps Ellipse}}): De longchamps ellipse
- de Longchamps Line ({{MathWorld | urlname=deLongchampsLine | title=de Longchamps Line}}): De longchamps line
- de Longchamps Point ({{MathWorld | urlname=deLongchampsPoint | title=de Longchamps Point}}): De longchamps point
- de Méré's Problem ({{MathWorld | urlname=deMeresProblem | title=de Méré's Problem}}): De méré's problem
- de Moivre Number ({{MathWorld | urlname=deMoivreNumber | title=de Moivre Number}}): De moivre number
- de Moivre's Identity ({{MathWorld | urlname=deMoivresIdentity | title=de Moivre's Identity}}): De moivre's identity
- de Moivre's Quintic ({{MathWorld | urlname=deMoivresQuintic | title=de Moivre's Quintic}}): De moivre's quintic
- de Moivre-Laplace Theorem ({{MathWorld | urlname=deMoivre-LaplaceTheorem | title=de Moivre-Laplace Theorem}}): De moivre-laplace theorem
- de Morgan's and Bertrand's Test ({{MathWorld | urlname=deMorgansandBertrandsTest | title=de Morgan's and Bertrand's Test}}): De morgan's and bertrand's test
- de Morgan's Duality Law ({{MathWorld | urlname=deMorgansDualityLaw | title=de Morgan's Duality Law}}): De morgan's duality law
- de Morgan's Laws ({{MathWorld | urlname=deMorgansLaws | title=de Morgan's Laws}}): De morgan's laws
- de Polignac's Conjecture ({{MathWorld | urlname=dePolignacsConjecture | title=de Polignac's Conjecture}}): De polignac's conjecture
- de Rham Cohomology ({{MathWorld | urlname=deRhamCohomology | title=de Rham Cohomology}}): De rham cohomology
- de Rham's Function ({{MathWorld | urlname=deRhamsFunction | title=de Rham's Function}}): De rham's function
- de Sluze Conchoid ({{MathWorld | urlname=deSluzeConchoid | title=de Sluze Conchoid}}): De sluze conchoid
- de Sluze Pearls ({{MathWorld | urlname=deSluzePearls | title=de Sluze Pearls}}): De sluze pearls
- de Villiers Points ({{MathWorld | urlname=deVilliersPoints | title=de Villiers Points}}): De villiers points
- Dead Variable ({{MathWorld | urlname=DeadVariable | title=Dead Variable}}): Dead variable
- Debye Functions ({{MathWorld | urlname=DebyeFunctions | title=Debye Functions}}): Debye functions
- Debye's Asymptotic Representation ({{MathWorld | urlname=DebyesAsymptoticRepresentation | title=Debye's Asymptotic Representation}}): Debye's asymptotic representation
- Decad ({{MathWorld | urlname=Decad | title=Decad}}): Decad
- Decade ({{MathWorld | urlname=Decade | title=Decade}}): Decade
- Decagon ({{MathWorld | urlname=Decagon | title=Decagon}}): Decagon
- Decagonal Number ({{MathWorld | urlname=DecagonalNumber | title=Decagonal Number}}): Decagonal number
- Decagram ({{MathWorld | urlname=Decagram | title=Decagram}}): Decagram
- Decahedral Graph ({{MathWorld | urlname=DecahedralGraph | title=Decahedral Graph}}): Decahedral graph
- Decahedron ({{MathWorld | urlname=Decahedron | title=Decahedron}}): Decahedron
- Decanting Problem ({{MathWorld | urlname=DecantingProblem | title=Decanting Problem}}): Decanting problem
- Decic Surface ({{MathWorld | urlname=DecicSurface | title=Decic Surface}}): Decic surface
- Decidable ({{MathWorld | urlname=Decidable | title=Decidable}}): Decidable
- Decillion ({{MathWorld | urlname=Decillion | title=Decillion}}): Decillion
- Decimal ({{MathWorld | urlname=Decimal | title=Decimal}}): Decimal
- Decimal Comma ({{MathWorld | urlname=DecimalComma | title=Decimal Comma}}): Decimal comma
- Decimal Expansion ({{MathWorld | urlname=DecimalExpansion | title=Decimal Expansion}}): Decimal expansion
- Decimal Period ({{MathWorld | urlname=DecimalPeriod | title=Decimal Period}}): Decimal period
- Decimal Point ({{MathWorld | urlname=DecimalPoint | title=Decimal Point}}): Decimal point
- Decision Problem ({{MathWorld | urlname=DecisionProblem | title=Decision Problem}}): Decision problem
- Decision Theory ({{MathWorld | urlname=DecisionTheory | title=Decision Theory}}): Decision theory
- Deck Transformation ({{MathWorld | urlname=DeckTransformation | title=Deck Transformation}}): Deck transformation
- Decomposable ({{MathWorld | urlname=Decomposable | title=Decomposable}}): Decomposable
- Decomposable Continuum ({{MathWorld | urlname=DecomposableContinuum | title=Decomposable Continuum}}): Decomposable continuum
- Decomposable Module ({{MathWorld | urlname=DecomposableModule | title=Decomposable Module}}): Decomposable module
- Decomposition ({{MathWorld | urlname=Decomposition | title=Decomposition}}): Decomposition
- Decomposition Group ({{MathWorld | urlname=DecompositionGroup | title=Decomposition Group}}): Decomposition group
- Deconvolution ({{MathWorld | urlname=Deconvolution | title=Deconvolution}}): Deconvolution
- Decreasing Function ({{MathWorld | urlname=DecreasingFunction | title=Decreasing Function}}): Decreasing function
- Decreasing Sequence ({{MathWorld | urlname=DecreasingSequence | title=Decreasing Sequence}}): Decreasing sequence
- Decreasing Series ({{MathWorld | urlname=DecreasingSeries | title=Decreasing Series}}): Decreasing series
- Dedekind Cut ({{MathWorld | urlname=DedekindCut | title=Dedekind Cut}}): Dedekind cut
- Dedekind Domain ({{MathWorld | urlname=DedekindDomain | title=Dedekind Domain}}): Dedekind domain
- Dedekind Eta Function ({{MathWorld | urlname=DedekindEtaFunction | title=Dedekind Eta Function}}): Dedekind eta function
- Dedekind Function ({{MathWorld | urlname=DedekindFunction | title=Dedekind Function}}): Dedekind function
- Dedekind Number ({{MathWorld | urlname=DedekindNumber | title=Dedekind Number}}): Dedekind number
- Dedekind Ring ({{MathWorld | urlname=DedekindRing | title=Dedekind Ring}}): Dedekind ring
- Dedekind Section ({{MathWorld | urlname=DedekindSection | title=Dedekind Section}}): Dedekind section
- Dedekind Sum ({{MathWorld | urlname=DedekindSum | title=Dedekind Sum}}): Dedekind sum
- Dedekind's Axiom ({{MathWorld | urlname=DedekindsAxiom | title=Dedekind's Axiom}}): Dedekind's axiom
- Dedekind's Problem ({{MathWorld | urlname=DedekindsProblem | title=Dedekind's Problem}}): Dedekind's problem
- DedekindEta ({{MathWorld | urlname=DedekindEta | title=DedekindEta}}): Dedekindeta
- Deducible ({{MathWorld | urlname=Deducible | title=Deducible}}): Deducible
- Deduction ({{MathWorld | urlname=Deduction | title=Deduction}}): Deduction
- Deduction Theorem ({{MathWorld | urlname=DeductionTheorem | title=Deduction Theorem}}): Deduction theorem
- Deep Theorem ({{MathWorld | urlname=DeepTheorem | title=Deep Theorem}}): Deep theorem
- Defective Matrix ({{MathWorld | urlname=DefectiveMatrix | title=Defective Matrix}}): Defective matrix
- Defective Number ({{MathWorld | urlname=DefectiveNumber | title=Defective Number}}): Defective number
- Deficiency ({{MathWorld | urlname=Deficiency | title=Deficiency}}): Deficiency
- Deficient Number ({{MathWorld | urlname=DeficientNumber | title=Deficient Number}}): Deficient number
- Definable Set ({{MathWorld | urlname=DefinableSet | title=Definable Set}}): Definable set
- Defined ({{MathWorld | urlname=Defined | title=Defined}}): Defined
- Definite Clause ({{MathWorld | urlname=DefiniteClause | title=Definite Clause}}): Definite clause
- Definite Integral ({{MathWorld | urlname=DefiniteIntegral | title=Definite Integral}}): Definite integral
- Definition ({{MathWorld | urlname=Definition | title=Definition}}): Definition
- Deformation ({{MathWorld | urlname=Deformation | title=Deformation}}): Deformation
- Deformation Retract ({{MathWorld | urlname=DeformationRetract | title=Deformation Retract}}): Deformation retract
- Deformation Theory ({{MathWorld | urlname=DeformationTheory | title=Deformation Theory}}): Deformation theory
- Degen's Eight-Square Identity ({{MathWorld | urlname=DegensEight-SquareIdentity | title=Degen's Eight-Square Identity}}): Degen's eight-square identity
- Degeneracy ({{MathWorld | urlname=Degeneracy | title=Degeneracy}}): Degeneracy
- Degenerate ({{MathWorld | urlname=Degenerate | title=Degenerate}}): Degenerate
- Degree ({{MathWorld | urlname=Degree | title=Degree}}): Degree
- Degree Matrix ({{MathWorld | urlname=DegreeMatrix | title=Degree Matrix}}): Degree matrix
- Degree of Freedom ({{MathWorld | urlname=DegreeofFreedom | title=Degree of Freedom}}): Degree of freedom
- Degree Sequence ({{MathWorld | urlname=DegreeSequence | title=Degree Sequence}}): Degree sequence
- Degree Set ({{MathWorld | urlname=DegreeSet | title=Degree Set}}): Degree set
- Dehn Invariant ({{MathWorld | urlname=DehnInvariant | title=Dehn Invariant}}): Dehn invariant
- Dehn Surgery ({{MathWorld | urlname=DehnSurgery | title=Dehn Surgery}}): Dehn surgery
- Dehn's Lemma ({{MathWorld | urlname=DehnsLemma | title=Dehn's Lemma}}): Dehn's lemma
- Del ({{MathWorld | urlname=Del | title=Del}}): Del
- Del Bar Operator ({{MathWorld | urlname=DelBarOperator | title=Del Bar Operator}}): Del bar operator
- Del Pezzo Surface ({{MathWorld | urlname=DelPezzoSurface | title=Del Pezzo Surface}}): Del pezzo surface
- Delambre's Analogies ({{MathWorld | urlname=DelambresAnalogies | title=Delambre's Analogies}}): Delambre's analogies
- Delannoy Number ({{MathWorld | urlname=DelannoyNumber | title=Delannoy Number}}): Delannoy number
- Delaunay Triangulation ({{MathWorld | urlname=DelaunayTriangulation | title=Delaunay Triangulation}}): Delaunay triangulation
- Delay Differential Equation ({{MathWorld | urlname=DelayDifferentialEquation | title=Delay Differential Equation}}): Delay differential equation
- Delboeuf Illusion ({{MathWorld | urlname=DelboeufIllusion | title=Delboeuf Illusion}}): Delboeuf illusion
- Deletable Prime ({{MathWorld | urlname=DeletablePrime | title=Deletable Prime}}): Deletable prime
- DeleteDuplicates ({{MathWorld | urlname=DeleteDuplicates | title=DeleteDuplicates}}): Deleteduplicates
- Delian Constant ({{MathWorld | urlname=DelianConstant | title=Delian Constant}}): Delian constant
- Delian Problem ({{MathWorld | urlname=DelianProblem | title=Delian Problem}}): Delian problem
- Delta Amplitude ({{MathWorld | urlname=DeltaAmplitude | title=Delta Amplitude}}): Delta amplitude
- Delta Curve ({{MathWorld | urlname=DeltaCurve | title=Delta Curve}}): Delta curve
- Delta Function ({{MathWorld | urlname=DeltaFunction | title=Delta Function}}): Delta function
- Delta Operator ({{MathWorld | urlname=DeltaOperator | title=Delta Operator}}): Delta operator
- Delta Sequence ({{MathWorld | urlname=DeltaSequence | title=Delta Sequence}}): Delta sequence
- Delta Variation ({{MathWorld | urlname=DeltaVariation | title=Delta Variation}}): Delta variation
- Delta-Ring ({{MathWorld | urlname=Delta-Ring | title=Delta-Ring}}): Delta-ring
- Deltahedron ({{MathWorld | urlname=Deltahedron | title=Deltahedron}}): Deltahedron
- Deltohedron ({{MathWorld | urlname=Deltohedron | title=Deltohedron}}): Deltohedron
- Deltoid ({{MathWorld | urlname=Deltoid | title=Deltoid}}): Deltoid
- Deltoid Catacaustic ({{MathWorld | urlname=DeltoidCatacaustic | title=Deltoid Catacaustic}}): Deltoid catacaustic
- Deltoid Evolute ({{MathWorld | urlname=DeltoidEvolute | title=Deltoid Evolute}}): Deltoid evolute
- Deltoid Involute ({{MathWorld | urlname=DeltoidInvolute | title=Deltoid Involute}}): Deltoid involute
- Deltoid Pedal Curve ({{MathWorld | urlname=DeltoidPedalCurve | title=Deltoid Pedal Curve}}): Deltoid pedal curve
- Deltoid Radial Curve ({{MathWorld | urlname=DeltoidRadialCurve | title=Deltoid Radial Curve}}): Deltoid radial curve
- Deltoidal Hexecontahedral Graph ({{MathWorld | urlname=DeltoidalHexecontahedralGraph | title=Deltoidal Hexecontahedral Graph}}): Deltoidal hexecontahedral graph
- Deltoidal Hexecontahedron ({{MathWorld | urlname=DeltoidalHexecontahedron | title=Deltoidal Hexecontahedron}}): Deltoidal hexecontahedron
- Deltoidal Icositetrahedral Graph ({{MathWorld | urlname=DeltoidalIcositetrahedralGraph | title=Deltoidal Icositetrahedral Graph}}): Deltoidal icositetrahedral graph
- Deltoidal Icositetrahedron ({{MathWorld | urlname=DeltoidalIcositetrahedron | title=Deltoidal Icositetrahedron}}): Deltoidal icositetrahedron
- Deltoidal Icositetrahedron Stellations ({{MathWorld | urlname=DeltoidalIcositetrahedronStellations | title=Deltoidal Icositetrahedron Stellations}}): Deltoidal icositetrahedron stellations
- Demiregular Tessellation ({{MathWorld | urlname=DemiregularTessellation | title=Demiregular Tessellation}}): Demiregular tessellation
- Demlo Number ({{MathWorld | urlname=DemloNumber | title=Demlo Number}}): Demlo number
- Dendrite ({{MathWorld | urlname=Dendrite | title=Dendrite}}): Dendrite
- Dendrite Fractal ({{MathWorld | urlname=DendriteFractal | title=Dendrite Fractal}}): Dendrite fractal
- Denjoy Integral ({{MathWorld | urlname=DenjoyIntegral | title=Denjoy Integral}}): Denjoy integral
- Denominator ({{MathWorld | urlname=Denominator | title=Denominator}}): Denominator
- Dense ({{MathWorld | urlname=Dense | title=Dense}}): Dense
- Density ({{MathWorld | urlname=Density | title=Density}}): Density
- Density Function ({{MathWorld | urlname=DensityFunction | title=Density Function}}): Density function
- Denumerable Set ({{MathWorld | urlname=DenumerableSet | title=Denumerable Set}}): Denumerable set
- Denumerably Infinite ({{MathWorld | urlname=DenumerablyInfinite | title=Denumerably Infinite}}): Denumerably infinite
- Depth ({{MathWorld | urlname=Depth | title=Depth}}): Depth
- Depth-First Traversal ({{MathWorld | urlname=Depth-FirstTraversal | title=Depth-First Traversal}}): Depth-first traversal
- Derangement ({{MathWorld | urlname=Derangement | title=Derangement}}): Derangement
- Derangement Number ({{MathWorld | urlname=DerangementNumber | title=Derangement Number}}): Derangement number
- Derivation ({{MathWorld | urlname=Derivation | title=Derivation}}): Derivation
- Derivation Algebra ({{MathWorld | urlname=DerivationAlgebra | title=Derivation Algebra}}): Derivation algebra
- Derivative ({{MathWorld | urlname=Derivative | title=Derivative}}): Derivative
- Derivative Test ({{MathWorld | urlname=DerivativeTest | title=Derivative Test}}): Derivative test
- Derived Functor ({{MathWorld | urlname=DerivedFunctor | title=Derived Functor}}): Derived functor
- Derived Group ({{MathWorld | urlname=DerivedGroup | title=Derived Group}}): Derived group
- Derived Polygon ({{MathWorld | urlname=DerivedPolygon | title=Derived Polygon}}): Derived polygon
- Derived Set ({{MathWorld | urlname=DerivedSet | title=Derived Set}}): Derived set
- Dervish ({{MathWorld | urlname=Dervish | title=Dervish}}): Dervish
- Desargues Configuration ({{MathWorld | urlname=DesarguesConfiguration | title=Desargues Configuration}}): Desargues configuration
- Desargues Graph ({{MathWorld | urlname=DesarguesGraph | title=Desargues Graph}}): Desargues graph
- Desargues' Theorem ({{MathWorld | urlname=DesarguesTheorem | title=Desargues' Theorem}}): Desargues' theorem
- Descartes Circle Theorem ({{MathWorld | urlname=DescartesCircleTheorem | title=Descartes Circle Theorem}}): Descartes circle theorem
- Descartes Folium ({{MathWorld | urlname=DescartesFolium | title=Descartes Folium}}): Descartes folium
- Descartes Ovals ({{MathWorld | urlname=DescartesOvals | title=Descartes Ovals}}): Descartes ovals
- Descartes Total Angular Defect ({{MathWorld | urlname=DescartesTotalAngularDefect | title=Descartes Total Angular Defect}}): Descartes total angular defect
- Descartes' Formula ({{MathWorld | urlname=DescartesFormula | title=Descartes' Formula}}): Descartes' formula
- Descartes' Sign Rule ({{MathWorld | urlname=DescartesSignRule | title=Descartes' Sign Rule}}): Descartes' sign rule
- Descartes' Snark ({{MathWorld | urlname=DescartesSnark | title=Descartes' Snark}}): Descartes' snark
- Descartes-Euler Polyhedral Formula ({{MathWorld | urlname=Descartes-EulerPolyhedralFormula | title=Descartes-Euler Polyhedral Formula}}): Descartes-euler polyhedral formula
- Descending Chain Condition ({{MathWorld | urlname=DescendingChainCondition | title=Descending Chain Condition}}): Descending chain condition
- Descending Plane Partition ({{MathWorld | urlname=DescendingPlanePartition | title=Descending Plane Partition}}): Descending plane partition
- Descriptive Geometry ({{MathWorld | urlname=DescriptiveGeometry | title=Descriptive Geometry}}): Descriptive geometry
- Descriptive Set Theory ({{MathWorld | urlname=DescriptiveSetTheory | title=Descriptive Set Theory}}): Descriptive set theory
- Desert Problem ({{MathWorld | urlname=DesertProblem | title=Desert Problem}}): Desert problem
- Design ({{MathWorld | urlname=Design | title=Design}}): Design
- Design Theory ({{MathWorld | urlname=DesignTheory | title=Design Theory}}): Design theory
- Desmic Configuration ({{MathWorld | urlname=DesmicConfiguration | title=Desmic Configuration}}): Desmic configuration
- Desmic Mate ({{MathWorld | urlname=DesmicMate | title=Desmic Mate}}): Desmic mate
- Desmic Surface ({{MathWorld | urlname=DesmicSurface | title=Desmic Surface}}): Desmic surface
- Destructive Dilemma ({{MathWorld | urlname=DestructiveDilemma | title=Destructive Dilemma}}): Destructive dilemma
- Det ({{MathWorld | urlname=Det | title=Det}}): Det
- Determinant ({{MathWorld | urlname=Determinant | title=Determinant}}): Determinant
- Determinant Expansion by Minors ({{MathWorld | urlname=DeterminantExpansionbyMinors | title=Determinant Expansion by Minors}}): Determinant expansion by minors
- Determinant Identities ({{MathWorld | urlname=DeterminantIdentities | title=Determinant Identities}}): Determinant identities
- Determinant Theorem ({{MathWorld | urlname=DeterminantTheorem | title=Determinant Theorem}}): Determinant theorem
- Determined by Chromatic Polynomial ({{MathWorld | urlname=DeterminedbyChromaticPolynomial | title=Determined by Chromatic Polynomial}}): Determined by chromatic polynomial
- Determined by Spectrum ({{MathWorld | urlname=DeterminedbySpectrum | title=Determined by Spectrum}}): Determined by spectrum
- Deterministic ({{MathWorld | urlname=Deterministic | title=Deterministic}}): Deterministic
- Developable Surface ({{MathWorld | urlname=DevelopableSurface | title=Developable Surface}}): Developable surface
- Deviation ({{MathWorld | urlname=Deviation | title=Deviation}}): Deviation
- Devil on Two Sticks ({{MathWorld | urlname=DevilonTwoSticks | title=Devil on Two Sticks}}): Devil on two sticks
- Devil's Curve ({{MathWorld | urlname=DevilsCurve | title=Devil's Curve}}): Devil's curve
- Devil's Needle Puzzle ({{MathWorld | urlname=DevilsNeedlePuzzle | title=Devil's Needle Puzzle}}): Devil's needle puzzle
- Devil's Pitchfork ({{MathWorld | urlname=DevilsPitchfork | title=Devil's Pitchfork}}): Devil's pitchfork
- Devil's Staircase ({{MathWorld | urlname=DevilsStaircase | title=Devil's Staircase}}): Devil's staircase
- Diabolic Square ({{MathWorld | urlname=DiabolicSquare | title=Diabolic Square}}): Diabolic square
- Diabolical Cube ({{MathWorld | urlname=DiabolicalCube | title=Diabolical Cube}}): Diabolical cube
- Diabolical Square ({{MathWorld | urlname=DiabolicalSquare | title=Diabolical Square}}): Diabolical square
- Diabolo ({{MathWorld | urlname=Diabolo | title=Diabolo}}): Diabolo
- Diacaustic ({{MathWorld | urlname=Diacaustic | title=Diacaustic}}): Diacaustic
- Diafix ({{MathWorld | urlname=Diafix | title=Diafix}}): Diafix
- Diagonal ({{MathWorld | urlname=Diagonal | title=Diagonal}}): Diagonal
- Diagonal Block Matrix ({{MathWorld | urlname=DiagonalBlockMatrix | title=Diagonal Block Matrix}}): Diagonal block matrix
- Diagonal Magic Cube ({{MathWorld | urlname=DiagonalMagicCube | title=Diagonal Magic Cube}}): Diagonal magic cube
- Diagonal Matrix ({{MathWorld | urlname=DiagonalMatrix | title=Diagonal Matrix}}): Diagonal matrix
- Diagonal Metric ({{MathWorld | urlname=DiagonalMetric | title=Diagonal Metric}}): Diagonal metric
- Diagonal Paradox ({{MathWorld | urlname=DiagonalParadox | title=Diagonal Paradox}}): Diagonal paradox
- Diagonal Points ({{MathWorld | urlname=DiagonalPoints | title=Diagonal Points}}): Diagonal points
- Diagonal Quadratic Form ({{MathWorld | urlname=DiagonalQuadraticForm | title=Diagonal Quadratic Form}}): Diagonal quadratic form
- Diagonal Ramsey Number ({{MathWorld | urlname=DiagonalRamseyNumber | title=Diagonal Ramsey Number}}): Diagonal ramsey number
- Diagonal Slash ({{MathWorld | urlname=DiagonalSlash | title=Diagonal Slash}}): Diagonal slash
- Diagonal Triangle ({{MathWorld | urlname=DiagonalTriangle | title=Diagonal Triangle}}): Diagonal triangle
- Diagonalizable Matrix ({{MathWorld | urlname=DiagonalizableMatrix | title=Diagonalizable Matrix}}): Diagonalizable matrix
- Diagonalization ({{MathWorld | urlname=Diagonalization | title=Diagonalization}}): Diagonalization
- Diagonally Dominant Matrix ({{MathWorld | urlname=DiagonallyDominantMatrix | title=Diagonally Dominant Matrix}}): Diagonally dominant matrix
- Diagonally Magic Square ({{MathWorld | urlname=DiagonallyMagicSquare | title=Diagonally Magic Square}}): Diagonally magic square
- Diagonals Problem ({{MathWorld | urlname=DiagonalsProblem | title=Diagonals Problem}}): Diagonals problem
- Diagram ({{MathWorld | urlname=Diagram | title=Diagram}}): Diagram
- Diagram Chasing ({{MathWorld | urlname=DiagramChasing | title=Diagram Chasing}}): Diagram chasing
- Diagram Lemma ({{MathWorld | urlname=DiagramLemma | title=Diagram Lemma}}): Diagram lemma
- Diagrammatic Move ({{MathWorld | urlname=DiagrammaticMove | title=Diagrammatic Move}}): Diagrammatic move
- Diameter ({{MathWorld | urlname=Diameter | title=Diameter}}): Diameter
- Diamond ({{MathWorld | urlname=Diamond | title=Diamond}}): Diamond
- Diamond Graph ({{MathWorld | urlname=DiamondGraph | title=Diamond Graph}}): Diamond graph
- Diamond Isomorphism Theorem ({{MathWorld | urlname=DiamondIsomorphismTheorem | title=Diamond Isomorphism Theorem}}): Diamond isomorphism theorem
- Dice ({{MathWorld | urlname=Dice | title=Dice}}): Dice
- Dichroic Polynomial ({{MathWorld | urlname=DichroicPolynomial | title=Dichroic Polynomial}}): Dichroic polynomial
- Dickman Function ({{MathWorld | urlname=DickmanFunction | title=Dickman Function}}): Dickman function
- Dicone ({{MathWorld | urlname=Dicone | title=Dicone}}): Dicone
- Dictionary Order ({{MathWorld | urlname=DictionaryOrder | title=Dictionary Order}}): Dictionary order
- Dido's Problem ({{MathWorld | urlname=DidosProblem | title=Dido's Problem}}): Dido's problem
- Diesis ({{MathWorld | urlname=Diesis | title=Diesis}}): Diesis
- Diffeomorphic ({{MathWorld | urlname=Diffeomorphic | title=Diffeomorphic}}): Diffeomorphic
- Diffeomorphism ({{MathWorld | urlname=Diffeomorphism | title=Diffeomorphism}}): Diffeomorphism
- Difference ({{MathWorld | urlname=Difference | title=Difference}}): Difference
- Difference Distribution ({{MathWorld | urlname=DifferenceDistribution | title=Difference Distribution}}): Difference distribution
- Difference Equation ({{MathWorld | urlname=DifferenceEquation | title=Difference Equation}}): Difference equation
- Difference of Successes ({{MathWorld | urlname=DifferenceofSuccesses | title=Difference of Successes}}): Difference of successes
- Difference Operator ({{MathWorld | urlname=DifferenceOperator | title=Difference Operator}}): Difference operator
- Difference Quotient ({{MathWorld | urlname=DifferenceQuotient | title=Difference Quotient}}): Difference quotient
- Difference Set ({{MathWorld | urlname=DifferenceSet | title=Difference Set}}): Difference set
- Difference Set Order ({{MathWorld | urlname=DifferenceSetOrder | title=Difference Set Order}}): Difference set order
- Difference Table ({{MathWorld | urlname=DifferenceTable | title=Difference Table}}): Difference table
- Difference-Differential Equation ({{MathWorld | urlname=Difference-DifferentialEquation | title=Difference-Differential Equation}}): Difference-differential equation
- Different ({{MathWorld | urlname=Different | title=Different}}): Different
- Different Prime Factors ({{MathWorld | urlname=DifferentPrimeFactors | title=Different Prime Factors}}): Different prime factors
- Differentiable ({{MathWorld | urlname=Differentiable | title=Differentiable}}): Differentiable
- Differentiable Manifold ({{MathWorld | urlname=DifferentiableManifold | title=Differentiable Manifold}}): Differentiable manifold
- Differentiable Structure ({{MathWorld | urlname=DifferentiableStructure | title=Differentiable Structure}}): Differentiable structure
- Differential ({{MathWorld | urlname=Differential | title=Differential}}): Differential
- Differential Algebra ({{MathWorld | urlname=DifferentialAlgebra | title=Differential Algebra}}): Differential algebra
- Differential Analysis ({{MathWorld | urlname=DifferentialAnalysis | title=Differential Analysis}}): Differential analysis
- Differential Calculus ({{MathWorld | urlname=DifferentialCalculus | title=Differential Calculus}}): Differential calculus
- Differential Delay Equation ({{MathWorld | urlname=DifferentialDelayEquation | title=Differential Delay Equation}}): Differential delay equation
- Differential Entropy ({{MathWorld | urlname=DifferentialEntropy | title=Differential Entropy}}): Differential entropy
- Differential Equation ({{MathWorld | urlname=DifferentialEquation | title=Differential Equation}}): Differential equation
- Differential Equation Symmetry ({{MathWorld | urlname=DifferentialEquationSymmetry | title=Differential Equation Symmetry}}): Differential equation symmetry
- Differential Evolution ({{MathWorld | urlname=DifferentialEvolution | title=Differential Evolution}}): Differential evolution
- Differential Form ({{MathWorld | urlname=DifferentialForm | title=Differential Form}}): Differential form
- Differential Geometry ({{MathWorld | urlname=DifferentialGeometry | title=Differential Geometry}}): Differential geometry
- Differential Ideal ({{MathWorld | urlname=DifferentialIdeal | title=Differential Ideal}}): Differential ideal
- Differential k-Form ({{MathWorld | urlname=Differentialk-Form | title=Differential k-Form}}): Differential k-form
- Differential Operator ({{MathWorld | urlname=DifferentialOperator | title=Differential Operator}}): Differential operator
- Differential Structure ({{MathWorld | urlname=DifferentialStructure | title=Differential Structure}}): Differential structure
- Differential Topology ({{MathWorld | urlname=DifferentialTopology | title=Differential Topology}}): Differential topology
- Differential-Algebraic Equation ({{MathWorld | urlname=Differential-AlgebraicEquation | title=Differential-Algebraic Equation}}): Differential-algebraic equation
- Differentiating Under the Integral Sign ({{MathWorld | urlname=DifferentiatingUndertheIntegralSign | title=Differentiating Under the Integral Sign}}): Differentiating under the integral sign
- Differentiation ({{MathWorld | urlname=Differentiation | title=Differentiation}}): Differentiation
- Differentiation Under the Integral Sign ({{MathWorld | urlname=DifferentiationUndertheIntegralSign | title=Differentiation Under the Integral Sign}}): Differentiation under the integral sign
- Diffie-Hellman Protocol ({{MathWorld | urlname=Diffie-HellmanProtocol | title=Diffie-Hellman Protocol}}): Diffie-hellman protocol
- Digamma Function ({{MathWorld | urlname=DigammaFunction | title=Digamma Function}}): Digamma function
- Digimetic ({{MathWorld | urlname=Digimetic | title=Digimetic}}): Digimetic
- Digit ({{MathWorld | urlname=Digit | title=Digit}}): Digit
- Digit Block ({{MathWorld | urlname=DigitBlock | title=Digit Block}}): Digit block
- Digit Count ({{MathWorld | urlname=DigitCount | title=Digit Count}}): Digit count
- Digit Product ({{MathWorld | urlname=DigitProduct | title=Digit Product}}): Digit product
- Digit Sum ({{MathWorld | urlname=DigitSum | title=Digit Sum}}): Digit sum
- Digit-Extraction Algorithm ({{MathWorld | urlname=Digit-ExtractionAlgorithm | title=Digit-Extraction Algorithm}}): Digit-extraction algorithm
- Digit-Shifting Constants ({{MathWorld | urlname=Digit-ShiftingConstants | title=Digit-Shifting Constants}}): Digit-shifting constants
- Digitaddition ({{MathWorld | urlname=Digitaddition | title=Digitaddition}}): Digitaddition
- Digitaddition Generator ({{MathWorld | urlname=DigitadditionGenerator | title=Digitaddition Generator}}): Digitaddition generator
- Digital Root ({{MathWorld | urlname=DigitalRoot | title=Digital Root}}): Digital root
- Digon ({{MathWorld | urlname=Digon | title=Digon}}): Digon
- Digraph ({{MathWorld | urlname=Digraph | title=Digraph}}): Digraph
- Digraph Sink ({{MathWorld | urlname=DigraphSink | title=Digraph Sink}}): Digraph sink
- Digraph Topology ({{MathWorld | urlname=DigraphTopology | title=Digraph Topology}}): Digraph topology
- Dihedral Angle ({{MathWorld | urlname=DihedralAngle | title=Dihedral Angle}}): Dihedral angle
- Dihedral Group ({{MathWorld | urlname=DihedralGroup | title=Dihedral Group}}): Dihedral group
- Dihedral Group D2 ({{MathWorld | urlname=DihedralGroupD2 | title=Dihedral Group D2}}): Dihedral group d2
- Dihedral Group D3 ({{MathWorld | urlname=DihedralGroupD3 | title=Dihedral Group D3}}): Dihedral group d3
- Dihedral Group D4 ({{MathWorld | urlname=DihedralGroupD4 | title=Dihedral Group D4}}): Dihedral group d4
- Dihedral Group D5 ({{MathWorld | urlname=DihedralGroupD5 | title=Dihedral Group D5}}): Dihedral group d5
- Dihedral Group D6 ({{MathWorld | urlname=DihedralGroupD6 | title=Dihedral Group D6}}): Dihedral group d6
- Dihedral Group D7 ({{MathWorld | urlname=DihedralGroupD7 | title=Dihedral Group D7}}): Dihedral group d7
- Dihedral Prime ({{MathWorld | urlname=DihedralPrime | title=Dihedral Prime}}): Dihedral prime
- Dihedron ({{MathWorld | urlname=Dihedron | title=Dihedron}}): Dihedron
- Dijkstra Tree ({{MathWorld | urlname=DijkstraTree | title=Dijkstra Tree}}): Dijkstra tree
- Dijkstra's Algorithm ({{MathWorld | urlname=DijkstrasAlgorithm | title=Dijkstra's Algorithm}}): Dijkstra's algorithm
- Dilation ({{MathWorld | urlname=Dilation | title=Dilation}}): Dilation
- Dilative Rotation ({{MathWorld | urlname=DilativeRotation | title=Dilative Rotation}}): Dilative rotation
- Dilcher's Formula ({{MathWorld | urlname=DilchersFormula | title=Dilcher's Formula}}): Dilcher's formula
- Dilemma ({{MathWorld | urlname=Dilemma | title=Dilemma}}): Dilemma
- Dilogarithm ({{MathWorld | urlname=Dilogarithm | title=Dilogarithm}}): Dilogarithm
- Dilworth's Lemma ({{MathWorld | urlname=DilworthsLemma | title=Dilworth's Lemma}}): Dilworth's lemma
- Dilworth's Theorem ({{MathWorld | urlname=DilworthsTheorem | title=Dilworth's Theorem}}): Dilworth's theorem
- Dimension ({{MathWorld | urlname=Dimension | title=Dimension}}): Dimension
- Dimension Axiom ({{MathWorld | urlname=DimensionAxiom | title=Dimension Axiom}}): Dimension axiom
- Dimension Invariance Theorem ({{MathWorld | urlname=DimensionInvarianceTheorem | title=Dimension Invariance Theorem}}): Dimension invariance theorem
- Dimensionality ({{MathWorld | urlname=Dimensionality | title=Dimensionality}}): Dimensionality
- Dimensionality Theorem ({{MathWorld | urlname=DimensionalityTheorem | title=Dimensionality Theorem}}): Dimensionality theorem
- Dimensionless Number ({{MathWorld | urlname=DimensionlessNumber | title=Dimensionless Number}}): Dimensionless number
- Diminished Polyhedron ({{MathWorld | urlname=DiminishedPolyhedron | title=Diminished Polyhedron}}): Diminished polyhedron
- Diminished Rhombicosidodecahedron ({{MathWorld | urlname=DiminishedRhombicosidodecahedron | title=Diminished Rhombicosidodecahedron}}): Diminished rhombicosidodecahedron
- Ding-Dong Surface ({{MathWorld | urlname=Ding-DongSurface | title=Ding-Dong Surface}}): Ding-dong surface
- Dini Expansion ({{MathWorld | urlname=DiniExpansion | title=Dini Expansion}}): Dini expansion
- Dini's Surface ({{MathWorld | urlname=DinisSurface | title=Dini's Surface}}): Dini's surface
- Dini's Test ({{MathWorld | urlname=DinisTest | title=Dini's Test}}): Dini's test
- Dinitz Problem ({{MathWorld | urlname=DinitzProblem | title=Dinitz Problem}}): Dinitz problem
- Diocles's Cissoid ({{MathWorld | urlname=DioclessCissoid | title=Diocles's Cissoid}}): Diocles's cissoid
- Diophantine Equation ({{MathWorld | urlname=DiophantineEquation | title=Diophantine Equation}}): Diophantine equation
- Diophantine Equation--10th Powers ({{MathWorld | urlname=DiophantineEquation10thPowers | title=Diophantine Equation--10th Powers}}): Diophantine equation--10th powers
- Diophantine Equation--2nd Powers ({{MathWorld | urlname=DiophantineEquation2ndPowers | title=Diophantine Equation--2nd Powers}}): Diophantine equation--2nd powers
- Diophantine Equation--3rd Powers ({{MathWorld | urlname=DiophantineEquation3rdPowers | title=Diophantine Equation--3rd Powers}}): Diophantine equation--3rd powers
- Diophantine Equation--4th Powers ({{MathWorld | urlname=DiophantineEquation4thPowers | title=Diophantine Equation--4th Powers}}): Diophantine equation--4th powers
- Diophantine Equation--5th Powers ({{MathWorld | urlname=DiophantineEquation5thPowers | title=Diophantine Equation--5th Powers}}): Diophantine equation--5th powers
- Diophantine Equation--6th Powers ({{MathWorld | urlname=DiophantineEquation6thPowers | title=Diophantine Equation--6th Powers}}): Diophantine equation--6th powers
- Diophantine Equation--7th Powers ({{MathWorld | urlname=DiophantineEquation7thPowers | title=Diophantine Equation--7th Powers}}): Diophantine equation--7th powers
- Diophantine Equation--8th Powers ({{MathWorld | urlname=DiophantineEquation8thPowers | title=Diophantine Equation--8th Powers}}): Diophantine equation--8th powers
- Diophantine Equation--9th Powers ({{MathWorld | urlname=DiophantineEquation9thPowers | title=Diophantine Equation--9th Powers}}): Diophantine equation--9th powers
- Diophantine Equation--nth Powers ({{MathWorld | urlname=DiophantineEquationnthPowers | title=Diophantine Equation--nth Powers}}): Diophantine equation--nth powers
- Diophantine Quadruple ({{MathWorld | urlname=DiophantineQuadruple | title=Diophantine Quadruple}}): Diophantine quadruple
- Diophantine Set ({{MathWorld | urlname=DiophantineSet | title=Diophantine Set}}): Diophantine set
- Diophantus Property ({{MathWorld | urlname=DiophantusProperty | title=Diophantus Property}}): Diophantus property
- Diophantus's Riddle ({{MathWorld | urlname=DiophantussRiddle | title=Diophantus's Riddle}}): Diophantus's riddle
- Dipole Graph ({{MathWorld | urlname=DipoleGraph | title=Dipole Graph}}): Dipole graph
- Dipyramid ({{MathWorld | urlname=Dipyramid | title=Dipyramid}}): Dipyramid
- Dirac Delta Function ({{MathWorld | urlname=DiracDeltaFunction | title=Dirac Delta Function}}): Dirac delta function
- Dirac Distribution ({{MathWorld | urlname=DiracDistribution | title=Dirac Distribution}}): Dirac distribution
- Dirac Equation ({{MathWorld | urlname=DiracEquation | title=Dirac Equation}}): Dirac equation
- Dirac Gamma Matrices ({{MathWorld | urlname=DiracGammaMatrices | title=Dirac Gamma Matrices}}): Dirac gamma matrices
- Dirac Gamma Matrix ({{MathWorld | urlname=DiracGammaMatrix | title=Dirac Gamma Matrix}}): Dirac gamma matrix
- Dirac Matrices ({{MathWorld | urlname=DiracMatrices | title=Dirac Matrices}}): Dirac matrices
- Dirac Notation ({{MathWorld | urlname=DiracNotation | title=Dirac Notation}}): Dirac notation
- Dirac Operator ({{MathWorld | urlname=DiracOperator | title=Dirac Operator}}): Dirac operator
- Dirac's Theorem ({{MathWorld | urlname=DiracsTheorem | title=Dirac's Theorem}}): Dirac's theorem
- DiracDelta ({{MathWorld | urlname=DiracDelta | title=DiracDelta}}): Diracdelta
- Direct Analytic Continuation ({{MathWorld | urlname=DirectAnalyticContinuation | title=Direct Analytic Continuation}}): Direct analytic continuation
- Direct Factor ({{MathWorld | urlname=DirectFactor | title=Direct Factor}}): Direct factor
- Direct Limit ({{MathWorld | urlname=DirectLimit | title=Direct Limit}}): Direct limit
- Direct Product ({{MathWorld | urlname=DirectProduct | title=Direct Product}}): Direct product
- Direct Proportion ({{MathWorld | urlname=DirectProportion | title=Direct Proportion}}): Direct proportion
- Direct Search ({{MathWorld | urlname=DirectSearch | title=Direct Search}}): Direct search
- Direct Search Factorization ({{MathWorld | urlname=DirectSearchFactorization | title=Direct Search Factorization}}): Direct search factorization
- Direct Sum ({{MathWorld | urlname=DirectSum | title=Direct Sum}}): Direct sum
- Direct Summand ({{MathWorld | urlname=DirectSummand | title=Direct Summand}}): Direct summand
- Direct System ({{MathWorld | urlname=DirectSystem | title=Direct System}}): Direct system
- Direct Variation ({{MathWorld | urlname=DirectVariation | title=Direct Variation}}): Direct variation
- Directed Acyclic Graph ({{MathWorld | urlname=DirectedAcyclicGraph | title=Directed Acyclic Graph}}): Directed acyclic graph
- Directed Angle ({{MathWorld | urlname=DirectedAngle | title=Directed Angle}}): Directed angle
- Directed Convex Polyomino ({{MathWorld | urlname=DirectedConvexPolyomino | title=Directed Convex Polyomino}}): Directed convex polyomino
- Directed Graph ({{MathWorld | urlname=DirectedGraph | title=Directed Graph}}): Directed graph
- Directed Infinity ({{MathWorld | urlname=DirectedInfinity | title=Directed Infinity}}): Directed infinity
- Directed Set ({{MathWorld | urlname=DirectedSet | title=Directed Set}}): Directed set
- Directed Strongly Regular Graph ({{MathWorld | urlname=DirectedStronglyRegularGraph | title=Directed Strongly Regular Graph}}): Directed strongly regular graph
- Direction ({{MathWorld | urlname=Direction | title=Direction}}): Direction
- Direction Cosine ({{MathWorld | urlname=DirectionCosine | title=Direction Cosine}}): Direction cosine
- Direction Vector ({{MathWorld | urlname=DirectionVector | title=Direction Vector}}): Direction vector
- Directional Derivative ({{MathWorld | urlname=DirectionalDerivative | title=Directional Derivative}}): Directional derivative
- Directly Proportional ({{MathWorld | urlname=DirectlyProportional | title=Directly Proportional}}): Directly proportional
- Directly Similar ({{MathWorld | urlname=DirectlySimilar | title=Directly Similar}}): Directly similar
- Director ({{MathWorld | urlname=Director | title=Director}}): Director
- Director Curve ({{MathWorld | urlname=DirectorCurve | title=Director Curve}}): Director curve
- Director Plane ({{MathWorld | urlname=DirectorPlane | title=Director Plane}}): Director plane
- Directrix ({{MathWorld | urlname=Directrix | title=Directrix}}): Directrix
- Dirichlet Beta Function ({{MathWorld | urlname=DirichletBetaFunction | title=Dirichlet Beta Function}}): Dirichlet beta function
- Dirichlet Boundary Conditions ({{MathWorld | urlname=DirichletBoundaryConditions | title=Dirichlet Boundary Conditions}}): Dirichlet boundary conditions
- Dirichlet Character ({{MathWorld | urlname=DirichletCharacter | title=Dirichlet Character}}): Dirichlet character
- Dirichlet Conditions ({{MathWorld | urlname=DirichletConditions | title=Dirichlet Conditions}}): Dirichlet conditions
- Dirichlet Distribution ({{MathWorld | urlname=DirichletDistribution | title=Dirichlet Distribution}}): Dirichlet distribution
- Dirichlet Divisor Problem ({{MathWorld | urlname=DirichletDivisorProblem | title=Dirichlet Divisor Problem}}): Dirichlet divisor problem
- Dirichlet Energy ({{MathWorld | urlname=DirichletEnergy | title=Dirichlet Energy}}): Dirichlet energy
- Dirichlet Eta Function ({{MathWorld | urlname=DirichletEtaFunction | title=Dirichlet Eta Function}}): Dirichlet eta function
- Dirichlet Fourier Series Conditions ({{MathWorld | urlname=DirichletFourierSeriesConditions | title=Dirichlet Fourier Series Conditions}}): Dirichlet fourier series conditions
- Dirichlet Function ({{MathWorld | urlname=DirichletFunction | title=Dirichlet Function}}): Dirichlet function
- Dirichlet Integrals ({{MathWorld | urlname=DirichletIntegrals | title=Dirichlet Integrals}}): Dirichlet integrals
- Dirichlet Kernel ({{MathWorld | urlname=DirichletKernel | title=Dirichlet Kernel}}): Dirichlet kernel
- Dirichlet L-Function ({{MathWorld | urlname=DirichletL-Function | title=Dirichlet L-Function}}): Dirichlet l-function
- Dirichlet L-Series ({{MathWorld | urlname=DirichletL-Series | title=Dirichlet L-Series}}): Dirichlet l-series
- Dirichlet Lambda Function ({{MathWorld | urlname=DirichletLambdaFunction | title=Dirichlet Lambda Function}}): Dirichlet lambda function
- Dirichlet Problem ({{MathWorld | urlname=DirichletProblem | title=Dirichlet Problem}}): Dirichlet problem
- Dirichlet Region ({{MathWorld | urlname=DirichletRegion | title=Dirichlet Region}}): Dirichlet region
- Dirichlet Series ({{MathWorld | urlname=DirichletSeries | title=Dirichlet Series}}): Dirichlet series
- Dirichlet Series Generating Function ({{MathWorld | urlname=DirichletSeriesGeneratingFunction | title=Dirichlet Series Generating Function}}): Dirichlet series generating function
- Dirichlet Structure Constant ({{MathWorld | urlname=DirichletStructureConstant | title=Dirichlet Structure Constant}}): Dirichlet structure constant
- Dirichlet Tessellation ({{MathWorld | urlname=DirichletTessellation | title=Dirichlet Tessellation}}): Dirichlet tessellation
- Dirichlet's Approximation Theorem ({{MathWorld | urlname=DirichletsApproximationTheorem | title=Dirichlet's Approximation Theorem}}): Dirichlet's approximation theorem
- Dirichlet's Box Principle ({{MathWorld | urlname=DirichletsBoxPrinciple | title=Dirichlet's Box Principle}}): Dirichlet's box principle
- Dirichlet's Boxing-In Principle ({{MathWorld | urlname=DirichletsBoxing-InPrinciple | title=Dirichlet's Boxing-In Principle}}): Dirichlet's boxing-in principle
- Dirichlet's Formula ({{MathWorld | urlname=DirichletsFormula | title=Dirichlet's Formula}}): Dirichlet's formula
- Dirichlet's Lemma ({{MathWorld | urlname=DirichletsLemma | title=Dirichlet's Lemma}}): Dirichlet's lemma
- Dirichlet's Principle ({{MathWorld | urlname=DirichletsPrinciple | title=Dirichlet's Principle}}): Dirichlet's principle
- Dirichlet's Test ({{MathWorld | urlname=DirichletsTest | title=Dirichlet's Test}}): Dirichlet's test
- Dirichlet's Theorem ({{MathWorld | urlname=DirichletsTheorem | title=Dirichlet's Theorem}}): Dirichlet's theorem
- Dirichlet-Hardy Test ({{MathWorld | urlname=Dirichlet-HardyTest | title=Dirichlet-Hardy Test}}): Dirichlet-hardy test
- Disc ({{MathWorld | urlname=Disc | title=Disc}}): Disc
- Disconnected Form ({{MathWorld | urlname=DisconnectedForm | title=Disconnected Form}}): Disconnected form
- Disconnected Graph ({{MathWorld | urlname=DisconnectedGraph | title=Disconnected Graph}}): Disconnected graph
- Disconnected Set ({{MathWorld | urlname=DisconnectedSet | title=Disconnected Set}}): Disconnected set
- Disconnected Space ({{MathWorld | urlname=DisconnectedSpace | title=Disconnected Space}}): Disconnected space
- Disconnectivity ({{MathWorld | urlname=Disconnectivity | title=Disconnectivity}}): Disconnectivity
- Discontinuity ({{MathWorld | urlname=Discontinuity | title=Discontinuity}}): Discontinuity
- Discontinuous ({{MathWorld | urlname=Discontinuous | title=Discontinuous}}): Discontinuous
- Discontinuous Function ({{MathWorld | urlname=DiscontinuousFunction | title=Discontinuous Function}}): Discontinuous function
- Discordant Permutation ({{MathWorld | urlname=DiscordantPermutation | title=Discordant Permutation}}): Discordant permutation
- Discrepancy ({{MathWorld | urlname=Discrepancy | title=Discrepancy}}): Discrepancy
- Discrepancy Theorem ({{MathWorld | urlname=DiscrepancyTheorem | title=Discrepancy Theorem}}): Discrepancy theorem
- Discrete Conformal Mapping ({{MathWorld | urlname=DiscreteConformalMapping | title=Discrete Conformal Mapping}}): Discrete conformal mapping
- Discrete Delta ({{MathWorld | urlname=DiscreteDelta | title=Discrete Delta}}): Discrete delta
- Discrete Discrepancy ({{MathWorld | urlname=DiscreteDiscrepancy | title=Discrete Discrepancy}}): Discrete discrepancy
- Discrete Distribution ({{MathWorld | urlname=DiscreteDistribution | title=Discrete Distribution}}): Discrete distribution
- Discrete Family ({{MathWorld | urlname=DiscreteFamily | title=Discrete Family}}): Discrete family
- Discrete Fourier Transform ({{MathWorld | urlname=DiscreteFourierTransform | title=Discrete Fourier Transform}}): Discrete fourier transform
- Discrete Geometry ({{MathWorld | urlname=DiscreteGeometry | title=Discrete Geometry}}): Discrete geometry
- Discrete Group ({{MathWorld | urlname=DiscreteGroup | title=Discrete Group}}): Discrete group
- Discrete Group Algebra ({{MathWorld | urlname=DiscreteGroupAlgebra | title=Discrete Group Algebra}}): Discrete group algebra
- Discrete Group Theory ({{MathWorld | urlname=DiscreteGroupTheory | title=Discrete Group Theory}}): Discrete group theory
- Discrete Lattice ({{MathWorld | urlname=DiscreteLattice | title=Discrete Lattice}}): Discrete lattice
- Discrete Log ({{MathWorld | urlname=DiscreteLog | title=Discrete Log}}): Discrete log
- Discrete Logarithm ({{MathWorld | urlname=DiscreteLogarithm | title=Discrete Logarithm}}): Discrete logarithm
- Discrete Math ({{MathWorld | urlname=DiscreteMath | title=Discrete Math}}): Discrete math
- Discrete Mathematics ({{MathWorld | urlname=DiscreteMathematics | title=Discrete Mathematics}}): Discrete mathematics
- Discrete Metric ({{MathWorld | urlname=DiscreteMetric | title=Discrete Metric}}): Discrete metric
- Discrete Semigroup Algebra ({{MathWorld | urlname=DiscreteSemigroupAlgebra | title=Discrete Semigroup Algebra}}): Discrete semigroup algebra
- Discrete Set ({{MathWorld | urlname=DiscreteSet | title=Discrete Set}}): Discrete set
- Discrete Space ({{MathWorld | urlname=DiscreteSpace | title=Discrete Space}}): Discrete space
- Discrete Topology ({{MathWorld | urlname=DiscreteTopology | title=Discrete Topology}}): Discrete topology
- Discrete Uniform Distribution ({{MathWorld | urlname=DiscreteUniformDistribution | title=Discrete Uniform Distribution}}): Discrete uniform distribution
- Discriminant ({{MathWorld | urlname=Discriminant | title=Discriminant}}): Discriminant
- Discriminant Analysis ({{MathWorld | urlname=DiscriminantAnalysis | title=Discriminant Analysis}}): Discriminant analysis
- Disdyakis Dodecahedral Graph ({{MathWorld | urlname=DisdyakisDodecahedralGraph | title=Disdyakis Dodecahedral Graph}}): Disdyakis dodecahedral graph
- Disdyakis Dodecahedron ({{MathWorld | urlname=DisdyakisDodecahedron | title=Disdyakis Dodecahedron}}): Disdyakis dodecahedron
- Disdyakis Triacontahedral Graph ({{MathWorld | urlname=DisdyakisTriacontahedralGraph | title=Disdyakis Triacontahedral Graph}}): Disdyakis triacontahedral graph
- Disdyakis Triacontahedron ({{MathWorld | urlname=DisdyakisTriacontahedron | title=Disdyakis Triacontahedron}}): Disdyakis triacontahedron
- Disjoint Sets ({{MathWorld | urlname=DisjointSets | title=Disjoint Sets}}): Disjoint sets
- Disjoint Union ({{MathWorld | urlname=DisjointUnion | title=Disjoint Union}}): Disjoint union
- Disjunct ({{MathWorld | urlname=Disjunct | title=Disjunct}}): Disjunct
- Disjunction ({{MathWorld | urlname=Disjunction | title=Disjunction}}): Disjunction
- Disjunctive Game ({{MathWorld | urlname=DisjunctiveGame | title=Disjunctive Game}}): Disjunctive game
- Disjunctive Normal Form ({{MathWorld | urlname=DisjunctiveNormalForm | title=Disjunctive Normal Form}}): Disjunctive normal form
- Disjunctive Syllogism ({{MathWorld | urlname=DisjunctiveSyllogism | title=Disjunctive Syllogism}}): Disjunctive syllogism
- Disk ({{MathWorld | urlname=Disk | title=Disk}}): Disk
- Disk Algebra ({{MathWorld | urlname=DiskAlgebra | title=Disk Algebra}}): Disk algebra
- Disk Covering Problem ({{MathWorld | urlname=DiskCoveringProblem | title=Disk Covering Problem}}): Disk covering problem
- Disk Lattice Points ({{MathWorld | urlname=DiskLatticePoints | title=Disk Lattice Points}}): Disk lattice points
- Disk Line Picking ({{MathWorld | urlname=DiskLinePicking | title=Disk Line Picking}}): Disk line picking
- Disk Packing ({{MathWorld | urlname=DiskPacking | title=Disk Packing}}): Disk packing
- Disk Point Picking ({{MathWorld | urlname=DiskPointPicking | title=Disk Point Picking}}): Disk point picking
- Disk Triangle Picking ({{MathWorld | urlname=DiskTrianglePicking | title=Disk Triangle Picking}}): Disk triangle picking
- Disk-Cyclide Coordinates ({{MathWorld | urlname=Disk-CyclideCoordinates | title=Disk-Cyclide Coordinates}}): Disk-cyclide coordinates
- Dispersion Numbers ({{MathWorld | urlname=DispersionNumbers | title=Dispersion Numbers}}): Dispersion numbers
- Dispersion Relation ({{MathWorld | urlname=DispersionRelation | title=Dispersion Relation}}): Dispersion relation
- Dispersive Long-Wave Equation ({{MathWorld | urlname=DispersiveLong-WaveEquation | title=Dispersive Long-Wave Equation}}): Dispersive long-wave equation
- Disphenocingulum ({{MathWorld | urlname=Disphenocingulum | title=Disphenocingulum}}): Disphenocingulum
- Disphenoid ({{MathWorld | urlname=Disphenoid | title=Disphenoid}}): Disphenoid
- Dissection ({{MathWorld | urlname=Dissection | title=Dissection}}): Dissection
- Dissection Fallacy ({{MathWorld | urlname=DissectionFallacy | title=Dissection Fallacy}}): Dissection fallacy
- Dissection Proof ({{MathWorld | urlname=DissectionProof | title=Dissection Proof}}): Dissection proof
- Dissection Puzzles ({{MathWorld | urlname=DissectionPuzzles | title=Dissection Puzzles}}): Dissection puzzles
- Dissipative System ({{MathWorld | urlname=DissipativeSystem | title=Dissipative System}}): Dissipative system
- Dissymmetric ({{MathWorld | urlname=Dissymmetric | title=Dissymmetric}}): Dissymmetric
- Distance ({{MathWorld | urlname=Distance | title=Distance}}): Distance
- Distance Graph ({{MathWorld | urlname=DistanceGraph | title=Distance Graph}}): Distance graph
- Distance k-Graph ({{MathWorld | urlname=Distancek-Graph | title=Distance k-Graph}}): Distance k-graph
- Distance Matrix ({{MathWorld | urlname=DistanceMatrix | title=Distance Matrix}}): Distance matrix
- Distance-Regular Graph ({{MathWorld | urlname=Distance-RegularGraph | title=Distance-Regular Graph}}): Distance-regular graph
- Distance-Transitive Graph ({{MathWorld | urlname=Distance-TransitiveGraph | title=Distance-Transitive Graph}}): Distance-transitive graph
- Distinct Prime Factorization ({{MathWorld | urlname=DistinctPrimeFactorization | title=Distinct Prime Factorization}}): Distinct prime factorization
- Distinct Prime Factors ({{MathWorld | urlname=DistinctPrimeFactors | title=Distinct Prime Factors}}): Distinct prime factors
- Distribution ({{MathWorld | urlname=Distribution | title=Distribution}}): Distribution
- Distribution Function ({{MathWorld | urlname=DistributionFunction | title=Distribution Function}}): Distribution function
- Distribution Parameter ({{MathWorld | urlname=DistributionParameter | title=Distribution Parameter}}): Distribution parameter
- Distributive ({{MathWorld | urlname=Distributive | title=Distributive}}): Distributive
- Distributive Lattice ({{MathWorld | urlname=DistributiveLattice | title=Distributive Lattice}}): Distributive lattice
- Ditrigonal Dodecadodecahedron ({{MathWorld | urlname=DitrigonalDodecadodecahedron | title=Ditrigonal Dodecadodecahedron}}): Ditrigonal dodecadodecahedron
- Ditrigonal Dodecahedron ({{MathWorld | urlname=DitrigonalDodecahedron | title=Ditrigonal Dodecahedron}}): Ditrigonal dodecahedron
- Divergence ({{MathWorld | urlname=Divergence | title=Divergence}}): Divergence
- Divergence Tests ({{MathWorld | urlname=DivergenceTests | title=Divergence Tests}}): Divergence tests
- Divergence Theorem ({{MathWorld | urlname=DivergenceTheorem | title=Divergence Theorem}}): Divergence theorem
- Divergenceless Field ({{MathWorld | urlname=DivergencelessField | title=Divergenceless Field}}): Divergenceless field
- Divergent Sequence ({{MathWorld | urlname=DivergentSequence | title=Divergent Sequence}}): Divergent sequence
- Divergent Series ({{MathWorld | urlname=DivergentSeries | title=Divergent Series}}): Divergent series
- Diversity Condition ({{MathWorld | urlname=DiversityCondition | title=Diversity Condition}}): Diversity condition
- Divide ({{MathWorld | urlname=Divide | title=Divide}}): Divide
- Divide and Conquer Algorithm ({{MathWorld | urlname=DivideandConquerAlgorithm | title=Divide and Conquer Algorithm}}): Divide and conquer algorithm
- Divided Difference ({{MathWorld | urlname=DividedDifference | title=Divided Difference}}): Divided difference
- Dividend ({{MathWorld | urlname=Dividend | title=Dividend}}): Dividend
- Divides ({{MathWorld | urlname=Divides | title=Divides}}): Divides
- Divine Proportion ({{MathWorld | urlname=DivineProportion | title=Divine Proportion}}): Divine proportion
- Divisibility Tests ({{MathWorld | urlname=DivisibilityTests | title=Divisibility Tests}}): Divisibility tests
- Divisible ({{MathWorld | urlname=Divisible | title=Divisible}}): Divisible
- Divisible Module ({{MathWorld | urlname=DivisibleModule | title=Divisible Module}}): Divisible module
- Divisible Property ({{MathWorld | urlname=DivisibleProperty | title=Divisible Property}}): Divisible property
- Division ({{MathWorld | urlname=Division | title=Division}}): Division
- Division Algebra ({{MathWorld | urlname=DivisionAlgebra | title=Division Algebra}}): Division algebra
- Division Bracket ({{MathWorld | urlname=DivisionBracket | title=Division Bracket}}): Division bracket
- Division by Zero ({{MathWorld | urlname=DivisionbyZero | title=Division by Zero}}): Division by zero
- Division Lemma ({{MathWorld | urlname=DivisionLemma | title=Division Lemma}}): Division lemma
- Division Ring ({{MathWorld | urlname=DivisionRing | title=Division Ring}}): Division ring
- Divisor ({{MathWorld | urlname=Divisor | title=Divisor}}): Divisor
- Divisor Function ({{MathWorld | urlname=DivisorFunction | title=Divisor Function}}): Divisor function
- Divisor Product ({{MathWorld | urlname=DivisorProduct | title=Divisor Product}}): Divisor product
- Divisor Theory ({{MathWorld | urlname=DivisorTheory | title=Divisor Theory}}): Divisor theory
- Divisors ({{MathWorld | urlname=Divisors | title=Divisors}}): Divisors
- DivisorSigma ({{MathWorld | urlname=DivisorSigma | title=DivisorSigma}}): Divisorsigma
- Divorce Digraph ({{MathWorld | urlname=DivorceDigraph | title=Divorce Digraph}}): Divorce digraph
- Dixon's Factorization Method ({{MathWorld | urlname=DixonsFactorizationMethod | title=Dixon's Factorization Method}}): Dixon's factorization method
- Dixon's Identity ({{MathWorld | urlname=DixonsIdentity | title=Dixon's Identity}}): Dixon's identity
- Dixon's Random Squares Factorization Method ({{MathWorld | urlname=DixonsRandomSquaresFactorizationMethod | title=Dixon's Random Squares Factorization Method}}): Dixon's random squares factorization method
- Dixon's Theorem ({{MathWorld | urlname=DixonsTheorem | title=Dixon's Theorem}}): Dixon's theorem
- Dixon-Ferrar Formula ({{MathWorld | urlname=Dixon-FerrarFormula | title=Dixon-Ferrar Formula}}): Dixon-ferrar formula
- dn ({{MathWorld | urlname=dn | title=dn}}): Dn
- Dobiński's Formula ({{MathWorld | urlname=DobinskisFormula | title=Dobiński's Formula}}): Dobiński's formula
- Dodecadodecahedron ({{MathWorld | urlname=Dodecadodecahedron | title=Dodecadodecahedron}}): Dodecadodecahedron
- Dodecagon ({{MathWorld | urlname=Dodecagon | title=Dodecagon}}): Dodecagon
- Dodecagram ({{MathWorld | urlname=Dodecagram | title=Dodecagram}}): Dodecagram
- Dodecahedral Conjecture ({{MathWorld | urlname=DodecahedralConjecture | title=Dodecahedral Conjecture}}): Dodecahedral conjecture
- Dodecahedral Graph ({{MathWorld | urlname=DodecahedralGraph | title=Dodecahedral Graph}}): Dodecahedral graph
- Dodecahedral Space ({{MathWorld | urlname=DodecahedralSpace | title=Dodecahedral Space}}): Dodecahedral space
- Dodecahedron ({{MathWorld | urlname=Dodecahedron | title=Dodecahedron}}): Dodecahedron
- Dodecahedron 2-Compound ({{MathWorld | urlname=Dodecahedron2-Compound | title=Dodecahedron 2-Compound}}): Dodecahedron 2-compound
- Dodecahedron 5-Compound ({{MathWorld | urlname=Dodecahedron5-Compound | title=Dodecahedron 5-Compound}}): Dodecahedron 5-compound
- Dodecahedron 6-Compound ({{MathWorld | urlname=Dodecahedron6-Compound | title=Dodecahedron 6-Compound}}): Dodecahedron 6-compound
- Dodecahedron Simum ({{MathWorld | urlname=DodecahedronSimum | title=Dodecahedron Simum}}): Dodecahedron simum
- Dodecahedron Stellations ({{MathWorld | urlname=DodecahedronStellations | title=Dodecahedron Stellations}}): Dodecahedron stellations
- Dodecahedron-Icosahedron Compound ({{MathWorld | urlname=Dodecahedron-IcosahedronCompound | title=Dodecahedron-Icosahedron Compound}}): Dodecahedron-icosahedron compound
- Dodecahedron-Small Triambic Icosahedron Compound ({{MathWorld | urlname=Dodecahedron-SmallTriambicIcosahedronCompound | title=Dodecahedron-Small Triambic Icosahedron Compound}}): Dodecahedron-small triambic icosahedron compound
- Dodecic Surface ({{MathWorld | urlname=DodecicSurface | title=Dodecic Surface}}): Dodecic surface
- Doily of Payne ({{MathWorld | urlname=DoilyofPayne | title=Doily of Payne}}): Doily of payne
- Dolbeault Cohomology ({{MathWorld | urlname=DolbeaultCohomology | title=Dolbeault Cohomology}}): Dolbeault cohomology
- Dolbeault Operators ({{MathWorld | urlname=DolbeaultOperators | title=Dolbeault Operators}}): Dolbeault operators
- Dollar Paradox ({{MathWorld | urlname=DollarParadox | title=Dollar Paradox}}): Dollar paradox
- Dom ({{MathWorld | urlname=Dom | title=Dom}}): Dom
- Domain ({{MathWorld | urlname=Domain | title=Domain}}): Domain
- Domain Invariance Theorem ({{MathWorld | urlname=DomainInvarianceTheorem | title=Domain Invariance Theorem}}): Domain invariance theorem
- Dome ({{MathWorld | urlname=Dome | title=Dome}}): Dome
- Dominance ({{MathWorld | urlname=Dominance | title=Dominance}}): Dominance
- Dominant Set ({{MathWorld | urlname=DominantSet | title=Dominant Set}}): Dominant set
- Dominating Set ({{MathWorld | urlname=DominatingSet | title=Dominating Set}}): Dominating set
- Domination Number ({{MathWorld | urlname=DominationNumber | title=Domination Number}}): Domination number
- Domineering ({{MathWorld | urlname=Domineering | title=Domineering}}): Domineering
- Domino ({{MathWorld | urlname=Domino | title=Domino}}): Domino
- Domino Graph ({{MathWorld | urlname=DominoGraph | title=Domino Graph}}): Domino graph
- Domino Problem ({{MathWorld | urlname=DominoProblem | title=Domino Problem}}): Domino problem
- Donaldson Invariants ({{MathWorld | urlname=DonaldsonInvariants | title=Donaldson Invariants}}): Donaldson invariants
- Donaldson Theory ({{MathWorld | urlname=DonaldsonTheory | title=Donaldson Theory}}): Donaldson theory
- Donkin's Theorem ({{MathWorld | urlname=DonkinsTheorem | title=Donkin's Theorem}}): Donkin's theorem
- Donut ({{MathWorld | urlname=Donut | title=Donut}}): Donut
- Doob Graph ({{MathWorld | urlname=DoobGraph | title=Doob Graph}}): Doob graph
- Doob's Theorem ({{MathWorld | urlname=DoobsTheorem | title=Doob's Theorem}}): Doob's theorem
- Dorman-Luke Construction ({{MathWorld | urlname=Dorman-LukeConstruction | title=Dorman-Luke Construction}}): Dorman-luke construction
- Doro Graph ({{MathWorld | urlname=DoroGraph | title=Doro Graph}}): Doro graph
- Dot ({{MathWorld | urlname=Dot | title=Dot}}): Dot
- Dot Product ({{MathWorld | urlname=DotProduct | title=Dot Product}}): Dot product
- Dots and Boxes ({{MathWorld | urlname=DotsandBoxes | title=Dots and Boxes}}): Dots and boxes
- Dottie Number ({{MathWorld | urlname=DottieNumber | title=Dottie Number}}): Dottie number
- Dou Circle ({{MathWorld | urlname=DouCircle | title=Dou Circle}}): Dou circle
- Douady's Rabbit Fractal ({{MathWorld | urlname=DouadysRabbitFractal | title=Douady's Rabbit Fractal}}): Douady's rabbit fractal
- Double ({{MathWorld | urlname=Double | title=Double}}): Double
- Double Bar ({{MathWorld | urlname=DoubleBar | title=Double Bar}}): Double bar
- Double Bubble ({{MathWorld | urlname=DoubleBubble | title=Double Bubble}}): Double bubble
- Double Bubble Conjecture ({{MathWorld | urlname=DoubleBubbleConjecture | title=Double Bubble Conjecture}}): Double bubble conjecture
- Double Cone ({{MathWorld | urlname=DoubleCone | title=Double Cone}}): Double cone
- Double Cone Graph ({{MathWorld | urlname=DoubleConeGraph | title=Double Cone Graph}}): Double cone graph
- Double Contact Theorem ({{MathWorld | urlname=DoubleContactTheorem | title=Double Contact Theorem}}): Double contact theorem
- Double Contraction Relation ({{MathWorld | urlname=DoubleContractionRelation | title=Double Contraction Relation}}): Double contraction relation
- Double Cube ({{MathWorld | urlname=DoubleCube | title=Double Cube}}): Double cube
- Double Cusp ({{MathWorld | urlname=DoubleCusp | title=Double Cusp}}): Double cusp
- Double Cylinder ({{MathWorld | urlname=DoubleCylinder | title=Double Cylinder}}): Double cylinder
- Double Dagger ({{MathWorld | urlname=DoubleDagger | title=Double Dagger}}): Double dagger
- Double Dot ({{MathWorld | urlname=DoubleDot | title=Double Dot}}): Double dot
- Double Exponential Distribution ({{MathWorld | urlname=DoubleExponentialDistribution | title=Double Exponential Distribution}}): Double exponential distribution
- Double Exponential Integration ({{MathWorld | urlname=DoubleExponentialIntegration | title=Double Exponential Integration}}): Double exponential integration
- Double Factorial ({{MathWorld | urlname=DoubleFactorial | title=Double Factorial}}): Double factorial
- Double Fan Graph ({{MathWorld | urlname=DoubleFanGraph | title=Double Fan Graph}}): Double fan graph
- Double Folium ({{MathWorld | urlname=DoubleFolium | title=Double Folium}}): Double folium
- Double Gamma Function ({{MathWorld | urlname=DoubleGammaFunction | title=Double Gamma Function}}): Double gamma function
- Double Graph ({{MathWorld | urlname=DoubleGraph | title=Double Graph}}): Double graph
- Double Integral ({{MathWorld | urlname=DoubleIntegral | title=Double Integral}}): Double integral
- Double Mersenne Number ({{MathWorld | urlname=DoubleMersenneNumber | title=Double Mersenne Number}}): Double mersenne number
- Double Normal ({{MathWorld | urlname=DoubleNormal | title=Double Normal}}): Double normal
- Double Obelisk ({{MathWorld | urlname=DoubleObelisk | title=Double Obelisk}}): Double obelisk
- Double Overdot ({{MathWorld | urlname=DoubleOverdot | title=Double Overdot}}): Double overdot
- Double Overhand Knot ({{MathWorld | urlname=DoubleOverhandKnot | title=Double Overhand Knot}}): Double overhand knot
- Double Point ({{MathWorld | urlname=DoublePoint | title=Double Point}}): Double point
- Double Prime ({{MathWorld | urlname=DoublePrime | title=Double Prime}}): Double prime
- Double Series ({{MathWorld | urlname=DoubleSeries | title=Double Series}}): Double series
- Double Sixes ({{MathWorld | urlname=DoubleSixes | title=Double Sixes}}): Double sixes
- Double Sphere ({{MathWorld | urlname=DoubleSphere | title=Double Sphere}}): Double sphere
- Double Star Snark ({{MathWorld | urlname=DoubleStarSnark | title=Double Star Snark}}): Double star snark
- Double Sum ({{MathWorld | urlname=DoubleSum | title=Double Sum}}): Double sum
- Double Torus ({{MathWorld | urlname=DoubleTorus | title=Double Torus}}): Double torus
- Double Wieferich Prime Pair ({{MathWorld | urlname=DoubleWieferichPrimePair | title=Double Wieferich Prime Pair}}): Double wieferich prime pair
- Double-Angle Formulas ({{MathWorld | urlname=Double-AngleFormulas | title=Double-Angle Formulas}}): Double-angle formulas
- Double-Free Set ({{MathWorld | urlname=Double-FreeSet | title=Double-Free Set}}): Double-free set
- Doubled Knot ({{MathWorld | urlname=DoubledKnot | title=Doubled Knot}}): Doubled knot
- Doublestruck ({{MathWorld | urlname=Doublestruck | title=Doublestruck}}): Doublestruck
- Doublet Function ({{MathWorld | urlname=DoubletFunction | title=Doublet Function}}): Doublet function
- Doubly Even Number ({{MathWorld | urlname=DoublyEvenNumber | title=Doubly Even Number}}): Doubly even number
- Doubly Magic Square ({{MathWorld | urlname=DoublyMagicSquare | title=Doubly Magic Square}}): Doubly magic square
- Doubly Noncentral F-Distribution ({{MathWorld | urlname=DoublyNoncentralF-Distribution | title=Doubly Noncentral F-Distribution}}): Doubly noncentral f-distribution
- Doubly Nonnegative Matrix ({{MathWorld | urlname=DoublyNonnegativeMatrix | title=Doubly Nonnegative Matrix}}): Doubly nonnegative matrix
- Doubly Periodic Function ({{MathWorld | urlname=DoublyPeriodicFunction | title=Doubly Periodic Function}}): Doubly periodic function
- Doubly Ruled Surface ({{MathWorld | urlname=DoublyRuledSurface | title=Doubly Ruled Surface}}): Doubly ruled surface
- Doubly Stochastic Matrix ({{MathWorld | urlname=DoublyStochasticMatrix | title=Doubly Stochastic Matrix}}): Doubly stochastic matrix
- Doubly Truncated Witt Graph ({{MathWorld | urlname=DoublyTruncatedWittGraph | title=Doubly Truncated Witt Graph}}): Doubly truncated witt graph
- Dougall's Formula ({{MathWorld | urlname=DougallsFormula | title=Dougall's Formula}}): Dougall's formula
- Dougall's Theorem ({{MathWorld | urlname=DougallsTheorem | title=Dougall's Theorem}}): Dougall's theorem
- Dougall-Ramanujan Identity ({{MathWorld | urlname=Dougall-RamanujanIdentity | title=Dougall-Ramanujan Identity}}): Dougall-ramanujan identity
- Doughnut ({{MathWorld | urlname=Doughnut | title=Doughnut}}): Doughnut
- Douglas-Neumann Theorem ({{MathWorld | urlname=Douglas-NeumannTheorem | title=Douglas-Neumann Theorem}}): Douglas-neumann theorem
- Dovetailing Problem ({{MathWorld | urlname=DovetailingProblem | title=Dovetailing Problem}}): Dovetailing problem
- Dowker Notation ({{MathWorld | urlname=DowkerNotation | title=Dowker Notation}}): Dowker notation
- Down Arrow Notation ({{MathWorld | urlname=DownArrowNotation | title=Down Arrow Notation}}): Down arrow notation
- Doyle Graph ({{MathWorld | urlname=DoyleGraph | title=Doyle Graph}}): Doyle graph
- Dozen ({{MathWorld | urlname=Dozen | title=Dozen}}): Dozen
- Drafter Triangle ({{MathWorld | urlname=DrafterTriangle | title=Drafter Triangle}}): Drafter triangle
- Dragon Curve ({{MathWorld | urlname=DragonCurve | title=Dragon Curve}}): Dragon curve
- Dragon Fractal ({{MathWorld | urlname=DragonFractal | title=Dragon Fractal}}): Dragon fractal
- Dragon Graph ({{MathWorld | urlname=DragonGraph | title=Dragon Graph}}): Dragon graph
- Draughts ({{MathWorld | urlname=Draughts | title=Draughts}}): Draughts
- Draw ({{MathWorld | urlname=Draw | title=Draw}}): Draw
- Drehpunkt ({{MathWorld | urlname=Drehpunkt | title=Drehpunkt}}): Drehpunkt
- Drinfeld Module ({{MathWorld | urlname=DrinfeldModule | title=Drinfeld Module}}): Drinfeld module
- Drinfeld Ring ({{MathWorld | urlname=DrinfeldRing | title=Drinfeld Ring}}): Drinfeld ring
- Drinfeld's Symmetric Space ({{MathWorld | urlname=DrinfeldsSymmetricSpace | title=Drinfeld's Symmetric Space}}): Drinfeld's symmetric space
- Drinfeld-Sokolov-Wilson Equation ({{MathWorld | urlname=Drinfeld-Sokolov-WilsonEquation | title=Drinfeld-Sokolov-Wilson Equation}}): Drinfeld-sokolov-wilson equation
- Droussent Cubic ({{MathWorld | urlname=DroussentCubic | title=Droussent Cubic}}): Droussent cubic
- Droz-Farny Circles ({{MathWorld | urlname=Droz-FarnyCircles | title=Droz-Farny Circles}}): Droz-farny circles
- Droz-Farny Line Theorem ({{MathWorld | urlname=Droz-FarnyLineTheorem | title=Droz-Farny Line Theorem}}): Droz-farny line theorem
- Droz-Farny Theorem ({{MathWorld | urlname=Droz-FarnyTheorem | title=Droz-Farny Theorem}}): Droz-farny theorem
- Drum ({{MathWorld | urlname=Drum | title=Drum}}): Drum
- ds ({{MathWorld | urlname=ds | title=ds}}): Ds
- DSolve ({{MathWorld | urlname=DSolve | title=DSolve}}): Dsolve
- Dt ({{MathWorld | urlname=Dt | title=Dt}}): Dt
- Du Bois Reymond Constants ({{MathWorld | urlname=DuBoisReymondConstants | title=Du Bois Reymond Constants}}): Du bois reymond constants
- Dual Basis ({{MathWorld | urlname=DualBasis | title=Dual Basis}}): Dual basis
- Dual Bivector ({{MathWorld | urlname=DualBivector | title=Dual Bivector}}): Dual bivector
- Dual Bundle ({{MathWorld | urlname=DualBundle | title=Dual Bundle}}): Dual bundle
- Dual Curve ({{MathWorld | urlname=DualCurve | title=Dual Curve}}): Dual curve
- Dual Graph ({{MathWorld | urlname=DualGraph | title=Dual Graph}}): Dual graph
- Dual Map ({{MathWorld | urlname=DualMap | title=Dual Map}}): Dual map
- Dual Normed Space ({{MathWorld | urlname=DualNormedSpace | title=Dual Normed Space}}): Dual normed space
- Dual Number ({{MathWorld | urlname=DualNumber | title=Dual Number}}): Dual number
- Dual Polyhedron ({{MathWorld | urlname=DualPolyhedron | title=Dual Polyhedron}}): Dual polyhedron
- Dual Scalar ({{MathWorld | urlname=DualScalar | title=Dual Scalar}}): Dual scalar
- Dual Solid ({{MathWorld | urlname=DualSolid | title=Dual Solid}}): Dual solid
- Dual Space ({{MathWorld | urlname=DualSpace | title=Dual Space}}): Dual space
- Dual Tensor ({{MathWorld | urlname=DualTensor | title=Dual Tensor}}): Dual tensor
- Dual Tessellation ({{MathWorld | urlname=DualTessellation | title=Dual Tessellation}}): Dual tessellation
- Dual Triangle ({{MathWorld | urlname=DualTriangle | title=Dual Triangle}}): Dual triangle
- Dual Vector Space ({{MathWorld | urlname=DualVectorSpace | title=Dual Vector Space}}): Dual vector space
- Dual Voting ({{MathWorld | urlname=DualVoting | title=Dual Voting}}): Dual voting
- Duality Law ({{MathWorld | urlname=DualityLaw | title=Duality Law}}): Duality law
- Duality Principle ({{MathWorld | urlname=DualityPrinciple | title=Duality Principle}}): Duality principle
- Duality Theorem ({{MathWorld | urlname=DualityTheorem | title=Duality Theorem}}): Duality theorem
- Dudley Triangle ({{MathWorld | urlname=DudleyTriangle | title=Dudley Triangle}}): Dudley triangle
- Duel ({{MathWorld | urlname=Duel | title=Duel}}): Duel
- Duffing Differential Equation ({{MathWorld | urlname=DuffingDifferentialEquation | title=Duffing Differential Equation}}): Duffing differential equation
- Duhamel's Convolution Principle ({{MathWorld | urlname=DuhamelsConvolutionPrinciple | title=Duhamel's Convolution Principle}}): Duhamel's convolution principle
- Dulmage-Mendelsohn Decomposition ({{MathWorld | urlname=Dulmage-MendelsohnDecomposition | title=Dulmage-Mendelsohn Decomposition}}): Dulmage-mendelsohn decomposition
- Dumbbell Curve ({{MathWorld | urlname=DumbbellCurve | title=Dumbbell Curve}}): Dumbbell curve
- Dummy Variable ({{MathWorld | urlname=DummyVariable | title=Dummy Variable}}): Dummy variable
- Duodecillion ({{MathWorld | urlname=Duodecillion | title=Duodecillion}}): Duodecillion
- Duodecimal ({{MathWorld | urlname=Duodecimal | title=Duodecimal}}): Duodecimal
- Dupin's Cyclide ({{MathWorld | urlname=DupinsCyclide | title=Dupin's Cyclide}}): Dupin's cyclide
- Dupin's Indicatrix ({{MathWorld | urlname=DupinsIndicatrix | title=Dupin's Indicatrix}}): Dupin's indicatrix
- Dupin's Theorem ({{MathWorld | urlname=DupinsTheorem | title=Dupin's Theorem}}): Dupin's theorem
- Duplication Formula ({{MathWorld | urlname=DuplicationFormula | title=Duplication Formula}}): Duplication formula
- Duplication of the Cube ({{MathWorld | urlname=DuplicationoftheCube | title=Duplication of the Cube}}): Duplication of the cube
- Durand's Rule ({{MathWorld | urlname=DurandsRule | title=Durand's Rule}}): Durand's rule
- Durfee Polynomial ({{MathWorld | urlname=DurfeePolynomial | title=Durfee Polynomial}}): Durfee polynomial
- Durfee Square ({{MathWorld | urlname=DurfeeSquare | title=Durfee Square}}): Durfee square
- Dust ({{MathWorld | urlname=Dust | title=Dust}}): Dust
- Dutch Windmill Graph ({{MathWorld | urlname=DutchWindmillGraph | title=Dutch Windmill Graph}}): Dutch windmill graph
- Dvoretzky's Theorem ({{MathWorld | urlname=DvoretzkysTheorem | title=Dvoretzky's Theorem}}): Dvoretzky's theorem
- Dyad ({{MathWorld | urlname=Dyad | title=Dyad}}): Dyad
- Dyadic ({{MathWorld | urlname=Dyadic | title=Dyadic}}): Dyadic
- Dyck Graph ({{MathWorld | urlname=DyckGraph | title=Dyck Graph}}): Dyck graph
- Dyck Language ({{MathWorld | urlname=DyckLanguage | title=Dyck Language}}): Dyck language
- Dyck Path ({{MathWorld | urlname=DyckPath | title=Dyck Path}}): Dyck path
- Dyck's Surface ({{MathWorld | urlname=DycksSurface | title=Dyck's Surface}}): Dyck's surface
- Dyck's Theorem ({{MathWorld | urlname=DycksTheorem | title=Dyck's Theorem}}): Dyck's theorem
- Dye's Theorem ({{MathWorld | urlname=DyesTheorem | title=Dye's Theorem}}): Dye's theorem
- Dyet ({{MathWorld | urlname=Dyet | title=Dyet}}): Dyet
- Dynamical System ({{MathWorld | urlname=DynamicalSystem | title=Dynamical System}}): Dynamical system
- Dynkin Diagram ({{MathWorld | urlname=DynkinDiagram | title=Dynkin Diagram}}): Dynkin diagram
- Dyson Integration Theorem ({{MathWorld | urlname=DysonIntegrationTheorem | title=Dyson Integration Theorem}}): Dyson integration theorem
- Dyson Mod 27 Identities ({{MathWorld | urlname=DysonMod27Identities | title=Dyson Mod 27 Identities}}): Dyson mod 27 identities
- Dyson's Conjecture ({{MathWorld | urlname=DysonsConjecture | title=Dyson's Conjecture}}): Dyson's conjecture