proposition: Lemma consttNK pi x : x.`_pi^'^' = x.`_pi.
proof: Proof. by rewrite /constt !partnNK. Qed.
imports: mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq div) mathcomp(fintype bigop finset prime fingroup morphism) mathcomp(gfunctor automorphism quotient action gproduct) mathcomp(cyclic)