Ideal

Ideal may refer to:

Philosophy

Ideal (ring theory), special subsets of a ring considered in abstract algebra
Ideal, special subsets of a semigroup
Ideal (order theory), special kind of lower sets of an order
Ideal (set theory), a collection of sets regarded as "small" or "negligible"
Ideal (Lie algebra), a particular subset in a Lie algebra
Ideal point, a boundary point in hyperbolic geometry
Ideal triangle, a triangle in hyperbolic geometry whose vertices are ideal points

Ideal chain, in science, the simplest model describing a polymer
Ideal gas law, in physics, governing the pressure of an ideal gas
Ideal transformer, an electrical transformer having zero resistance and perfect magnetic threading
Ideal final result, in TRIZ methodology, the best possible solution
Thought experiment, sometimes called an ideal experiment
Ideal type, a social science term
Ideal solution, a solution with thermodynamic properties analogous to those of a mixture of ideal gases

Ideal (group), a late-1990s/2000s American R&B group
Ideal (German band), an early-1980s German rock group
Ideal (album), a 1999 album by the R&B group Ideal
An Ideal, a 2016 album by Li Ronghao
Ideal (novel), a 1934 novel by Ayn Rand, published in 2015
- Ideal (play), a 1936 play by Ayn Rand, adapted from the novel, published in 1989
Ideal (TV series), a British situation comedy
Ideal Film Company, a British film studio of the Silent Era
Ideal Ice Cream, an ice cream company
Ideal Toy Company, a defunct toy company

Changhe Ideal, a city car produced by a joint-venture of Changhe and Suzuki
Ideal 18, a Canadian sailboat design
IDEAL Scholars Fund, an American scholarship program for underrepresented students
Ideal (newspaper), a Spanish-language newspaper
iDEAL, an online payment method in the Netherlands
Ideal Industries, an American manufacturer of electrical connectors and tools
IDEAL framework (Idea, Development, Exploration, Assessment, Long-term study), a framework for describing the stages of innovation in surgery
IDEAL (Interactive Development Environment for an Application Lifecycle), a development language above COBOL for DATACOM/DB