proposition: Lemma conjsgKV : @rev_right_loop _ gT invg conjugate.
proof: Proof. by move=> x A; rewrite -conjsgM mulVg conjsg1. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype div path tuple bigop prime finset)