Wikipedia:Reference desk/Archives/Mathematics/February 2010

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February 1

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 1

1. What's the standard of proof to tell if an operation on a vector yields a vector?
2. square root of x equals negative one
3. What is the rate of data input on a wiki article over time?
4. Closed subspace
5. are there inaccessible integers?
6. Derivation of volume of a pyramid
7. What are the formulas for a Mercator Projection?
8. Capacitance between 3 concentric spherical shell capacitors

February 2

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 2

1. Asymptotics of Euler Numbers
2. P-value: What is the connection between significance level of 5% and likelihood of 30%
3. Comparing vectors
4. Units Problem

February 3

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 3

1. Transcendental Galois extension
2. Smooth maps
3. Induction
4. Winning eight games out of ten
5. distance of a hyperplane from the origin and the norm
6. Discrete Mathematics: Do quantifier orders matter?
7. Homoeomeric curves
8. Clarification on 'Electric Potential Energy' article

February 4

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 4

1. Scientific Notation
2. Statistics course (titled Stochastic processes)
3. Really simple algebra problem.
4. Plane sections of an ellipsoid
5. Fisher information for dependent variables
6. Standard deviation
7. Question

February 5

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 5

1. abs(X) < 1
2. How to know if a sequence is an arithmetic progression given the formula for its nth term
3. Marks out of ten
4. Undefined terms in propositional logic
5. Speed and Time problem

February 6

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 6

1. Complex integral with respect to conjugate
2. Yotoplex?
3. modulo operation
4. Probability of each outcome when rolling 3 dice

February 7

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 7

1. Peano form and divided differences / mean value theorem
2. Circumcircles, Triangles and Similarity
3. Alpha function?
4. Sets containing themselves

February 8

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 8

1. c / d = c + d ; slove for c. Too simple, right????
2. Mohamed Altoumaimi
3. One-to-one and differentiable function

February 9

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 9

1. math lessons website
2. Male/Female ratio problem
3. Second integral in calculus

February 10

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 10

1. Uniform minimum variance unbiased estimator
2. Wiki div operator
3. Maximum cardinality of a distributive lattice of length n
4. Limits of periodic functions at Infinity
5. 9999 sticks and a triangle
6. postulate of construction of angles

February 11

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 11

1. Name that series
2. linear programming
3. Symmetry groups
4. Summing a series
5. Variability of taylor expansions in the complex plane under different branch-cuts
6. euromillions lotto rollover

February 12

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 12

1. Definition of Fundamental Domain from MathWorld--correct?
2. Integration of square root in the complex plane
3. Stats resources/texts
4. Integer closure under addition
5. 0.18, 9.45, and 0.38 estimation

February 13

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 13

1. linear programming
2. Lottery

February 14

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 14

1. Integration
2. Sum of all combinations of n

February 15

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 15

1. Definition of $sqrt{-1}$
2. What's the name for the argument of the logarithmic function?

February 16

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 16

1. Round 0.45 or 0.49 or 0.50
2. Cauchy Sequence Ring and Null Sequences - Square root of 2
3. Solving sin(x^2)
4. Sum of reciprocals of cubics
5. What's the name for a holomorphic function (e.g. a logarithmic function) not included in any other holomorphic function?
6. Sobbmub (talk) 15:47, 16 February 2010 (UTC)How can we solve it?Method please
7. math conversion
8. Least squares and oscillating solutions
9. Mathmatical formula for infinity symbol
10. Alternate Law of Cosines
11. One last question on principal ideals
12. LaTeX question, columns

February 17

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 17

1. Proof for this example on the Lambert W function?
2. Follow up: the name for the argument of the logarithmic function
3. First/second order languages
4. Homomorphism
5. Ominus
6. Spherical harmonic functions
7. math conversion two
8. Minkowski paper on L1 distance
9. LaTeX matrices
10. Integral of 1/x
11. Consistency of arithmetic Mod N

February 18

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 18

1. Standard Deviation and Semi-Interquartile Range
2. Alternation Operator

February 20

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 20

1. Sinusoidal function of time
2. Pi
3. Composite number
4. Getting to the South Pole
5. Complex Radius of Convergence
6. Probability Question
7. Exhaust sound

February 21

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 21

1. How to find the domain and range of this function?
2. Integration
3. Schlafli symbol
4. are there any free & meritorious statistics lessons/courses to be found online?
5. name of method for generating a circular path in x, y plane

February 22

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 22

1. Modal logic
2. What more do we need to know in order to Identify a function
3. Centre of a group algebra
4. Math Help

February 23

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 23

1. 98765321 / 1233456789
2. Inversion in a Galois Field
3. Bijection
4. Exponential function
5. Square roots
6. Integration
7. Digit by digit root calculation

February 24

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 24

1. The hardest Math question
2. multivariable simultaneous algebra
3. Squares and cubes
4. "Groundfield"
5. what is with #9?
6. Seperation of simultanious speech signals
7. what we call number 2?
8. is there a statistical difference between these data sets?

February 25

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 25

1. Expressing solution of a cubic in radicals
2. Involving Euclidean algorithm for polynomials

February 26

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 26

1. Mathematics: Complex Numbers and the Mandelbrot Set

February 27

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 27

1. Feedback help?
2. Multiplication of a random variable
3. What do I need to learn...

February 28

Wikipedia:Reference_desk/Archives/Mathematics/2010 February 28

1. Explicit Euler's Method
2. How to qualify $log(x^{n})=nlogx$ when n is even
3. Difference between Needleman-Wunsch and Smith-Waterman
4. Hermitian Matrices
5. Methods of making vectors for data