proposition: Lemma mul_pi x y : \pi_{alg F} x * \pi_{alg F} y = \pi_{alg F} (mul_algcreal x y).
proof: Proof. by rewrite [_ * _]piE. Qed.
imports: HB(structures) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice fintype) mathcomp(bigop order ssralg ssrnum ssrint rat poly polydiv polyorder) mathcomp(perm matrix mxpoly polyXY binomial generic_quotient) mathcomp(cauchyreals separable zmodp bigenough)