математика биективное отображение
noun Etymology: 1bi- + -jection (as in injection) a mathematical function that is a one-to-one and onto mapping — compare injection, surjection • bijective adjective
A function is bijective or a bijection or a one-to-one correspondence if it is both injective (no two values map to the same value) and surjective (for every element of the codomain there is some element of the domain which maps to it). I.e. there is exactly one element of the domain which maps to each element of the codomain. See also injection, surjection, isomorphism, permutation.