(Paraphrased) "If Sn is split into n disjoint subgroups of orders a1, a2...an, the Cauchy number is Sum

*{ai-1}.*

This is all the explanation given. The computation is easy, but I don't understand why I'm doing it. It's not describing the number of generators according to the permutation, is it?

Thanks!

This is all the explanation given. The computation is easy, but I don't understand why I'm doing it. It's not describing the number of generators according to the permutation, is it?

Thanks!