proposition: Fact comp_is_meet_morphism : meet_morphism (f \o g).
proof: Proof. by move=> x y; rewrite /= !omorphI. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)