proposition: Lemma actmE (a b : CT) (h : {hom a, b}) : (F # h)%monae = (M # h)%category.
proof: Proof. by congr (category.actm M); apply hom_ext. Qed.
imports: mathcomp(all_ssreflect) mathcomp(boolp) monae_lib HB(structures) hierarchy