proposition: Lemma mnmwgt1 i : mnmwgt U_(i) = i.+1.
proof: Proof. rewrite /mnmwgt (bigD1 i) //= mnm1E eqxx mul1n. rewrite big1 ?addn0 //= => j ne_ij; rewrite mnm1E. by rewrite eq_sym (negbTE ne_ij) mul0n. 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