permutation A permutation of a set S is a bijection from S to S. The permutations of S form a group, the symmetric group Sym(S) of S, under composition.
permutation
数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。