User:LDH

larryhammick at telus dot net

At Wiki I do a little on mathematics and a fair amount on Islamist, mostly Sunni, terrorism.

Below is my official secret Testing Ground.


A circular permutation on a set of k elements has sign . Let i be the order of m in . The permutation consists of orbits, each of size i, whence

If i is even then and so

If i is odd then 2i divides p-1, so

In both cases, Zolotarev's lemma follows from Euler's Criterion.