surjection
81Function (mathematics) — f(x) redirects here. For the band, see f(x) (band). Graph of example function, In mathematics, a function associates one quantity, the a …
82Range (mathematics) — In mathematics, the range of a function is the set of all output values produced by that function. Sometimes it is called the image, or more precisely, the image of the domain of the function. Range is also occasionally used to indicate the… …
83Heyting algebra — In mathematics, Heyting algebras are special partially ordered sets that constitute a generalization of Boolean algebras, named after Arend Heyting. Heyting algebras arise as models of intuitionistic logic, a logic in which the law of excluded… …
84Rotation matrix — In linear algebra, a rotation matrix is a matrix that is used to perform a rotation in Euclidean space. For example the matrix rotates points in the xy Cartesian plane counterclockwise through an angle θ about the origin of the Cartesian… …
85Θ (set theory) — In set theory, Theta; is the least ordinal α such that there is no surjection from the reals onto α.If the axiom of choice (AC) holds (or even if the reals can be wellordered) then Theta; is simply (2^{aleph 0})^+, the cardinal successor of the… …
86Implementation of mathematics in set theory — This article examines the implementation of mathematical concepts in set theory. The implementation of a number of basic mathematical concepts is carried out in parallel in ZFC (the dominant set theory) and in NFU, the version of Quine s New… …
87Topological conjugacy — In mathematics, two functions are said to be topologically conjugate to one another if there exists a homeomorphism that will conjugate the one into the other. Topological conjugacy is important in the study of iterated functions and more… …
88List of types of functions — Functions can be classified according to the properties they have. These properties describe the functions behaviour under certain conditions.Relative to set theoryThese properties concern the domain, the codomain and the range of functions. *… …
89Anneau idéal — Idéal Pour les articles homonymes, voir Idéal (homonymie). En mathématiques, un idéal est une structure algébrique définie dans un anneau. Les idéaux généralisent de façon féconde l étude de la divisibilité pour les entiers. Il est ainsi possible …
90Antecedent (mathematiques) — Antécédent (mathématiques) Pour les articles homonymes, voir Antécédent. Sommaire 1 Définition 1.1 Exemples 2 …
