proposition: Lemma p_elt_constt pi x : pi.-elt x.`_pi.
proof: Proof. by rewrite p_elt_exp /chinese addn0 mul1n dvdn_mulr. 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)