proposition: Lemma annul_alg_from_alg_creal_neq0 (x : {alg {alg F}}) : annul_from_alg (annul_alg x) != 0.
proof: Proof. by rewrite annul_from_alg_neq0 ?annul_alg_neq0. 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)