proposition: Lemma conjYg A B z : (A <*> B) :^z = A :^ z <*> B :^ z.
proof: Proof. by rewrite -genJ conjUg. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype div path tuple bigop prime finset)