proposition: Lemma mleadC (c : R) : mlead c%:MP = 0%MM.
proof: Proof. rewrite /mlead msuppC; case: eqP=> _. by rewrite big_nil. by rewrite big_seq1. 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