proposition: Lemma pihomog_id p : pihomog (pihomog p) = pihomog p.
proof: Proof. by rewrite pihomog_dE; last exact: pihomogP. 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