proposition: Lemma mmapX m : ('X_[m])^[f,h] = m^[h].
proof: Proof. by rewrite /mmap msuppX big_seq1 mcoeffX eqxx rmorph1 mul1r. 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