surjection
71Relation (mathematiques) — Correspondance et relation En algèbre générale (ou abstraite), le concept de correspondance, ou de relation, est une abstraction de notions telles que l’égalité, l’ordre alphabétique, ou la comparaison. De manière informelle, une relation dans un …
72Relation mathématique — Correspondance et relation En algèbre générale (ou abstraite), le concept de correspondance, ou de relation, est une abstraction de notions telles que l’égalité, l’ordre alphabétique, ou la comparaison. De manière informelle, une relation dans un …
73Covering graph — In the mathematical discipline of graph theory, a graph C is a covering graph of another graph G if there is a covering map from the vertex set of C to the vertex set of G. A covering map f is a surjection and a local isomorphism: the… …
74n-connected — This article is about the concept in algebraic topology. For the concept in graph theory, see Connectivity (graph theory). In the mathematical branch of algebraic topology, specifically homotopy theory, n connectedness is a way to say that a… …
75surjectif — surjectif, ive [ syrʒɛktif, iv ] adj. • mil. XXe; d apr. injectif, bijectif ♦ Math. Application surjective (ou SURJECTION n. f. ),telle que tout élément de l ensemble d arrivée soit l image d au moins un élément de l ensemble de départ. ●… …
76Equivalence relation — In mathematics, an equivalence relation is a binary relation between two elements of a set which groups them together as being equivalent in some way. Let a , b , and c be arbitrary elements of some set X . Then a b or a ≡ b denotes that a is… …
77Inverse function — In mathematics, if fnof; is a function from A to B then an inverse function for fnof; is a function in the opposite direction, from B to A , with the property that a round trip (a composition) from A to B to A (or from B to A to B ) returns each… …
78Morphism — In mathematics, a morphism is an abstraction derived from structure preserving mappings between two mathematical structures. The notion of morphism recurs in much of contemporary mathematics. In set theory, morphisms are functions; in linear… …
79Codomain — Image of a function f from X to Y. The smaller oval inside Y is the image of f. Y is the Codomain of f. In mathematics, the codomain or target set of a functio …
80König's theorem (set theory) — For other uses, see König s theorem. In set theory, König s theorem (named after the Hungarian mathematician Gyula König) colloquially states that if the axiom of choice holds, I is a set, mi and ni are cardinal numbers for every i in I , and m i …
