proposition: Lemma mulmor11 (M : {fpmod R}) : (@idm _ M) ** idm %= idm.
proof: Proof. by rewrite mul1mor. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq path) mathcomp(ssralg fintype perm choice matrix bigop zmodp mxalgebra poly) ssrcomplements stronglydiscrete coherent edr