proposition: Lemma dhomog_mesym d : mesym n R d \is d.-homog.
proof: Proof. apply/dhomogP => m; rewrite msupp_mesymP => /existsP [/= s]. by case/andP=> /eqP<- {d} /eqP -> {m}; exact/mdeg_mesym1. 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