Section BaseSetMulProp.
(* Properties of the purely multiplicative structure. *)
Variable gT : baseFinGroupType.
Implicit Types A B C D : {set gT}.
Implicit Type x y z : gT.
(* Set product. We already have all the pregroup identities, so we *)
(* only need to add the monotonicity rules.                        *)
(* Conjugates. *)
(* Class support. *)

Lemma class_supportEl A B : class_support A B = \bigcup_(x in A) x ^: B.