surjection

Tanımlar (İngilizce)

1. isim A function for which every element of the codomain is mapped to by some element of the domain; (formally) Any function f:X→Y for which for every y∈Y, there is at least one x∈X such that f(x)=y.

   “In some special cases, however, the number of surjections A#92;rightarrowB can be identified.”