1. Symmetric groupIn mathematics, the symmetric group Sn on a finite set of n symbols is the group whose elements are all the permutations of the n symbols, and whose group operation is the composition of such permutations, which are treated as bijective functions from the set of symbols to itself. Since there are n! possible permutations of a set of n symbols, it follows that the order (the number of elements) of the symmetric group Sn is n!.
Read “Symmetric group” on English Wikipedia
Read “対称群” on Japanese Wikipedia
Read “Symmetric group” on DBpedia
Read “Symmetric group” on English Wikipedia
Read “対称群” on Japanese Wikipedia
Read “Symmetric group” on DBpedia
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