proposition: Lemma mnm_nth x0 m j : m j = nth x0 m j.
proof: Proof. by rewrite mnm_tnth (tnth_nth x0). Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype tuple finfun bigop finset binomial) mathcomp(order fingroup perm ssralg zmodp poly ssrint) mathcomp(matrix vector) mathcomp(bigenough) ssrcomplements freeg