Документ взят из кэша поисковой машины. Адрес оригинального документа : http://temporology.bio.msu.ru/EREPORTS/levich_variational/Pics/Tab4.htm
Дата изменения: Fri Feb 28 05:00:18 2014
Дата индексирования: Fri Feb 28 05:51:11 2014
Кодировка:

Table 4. Number of correspondences from the set X (with the number of elements x) to the set A (with the number of elements a). Ck means a set C with the number of elements k. The subscripts mean that one counts the correspondences possessing the properties whose notations enter into these subscripts:

p —correspondences defined everywhere;

f — functional correspondences;

i — injective correspondences;

s — surjective correspondences

, where TA — is the set of all possible coverings of the set A