proposition: Lemma ge0_norm_alg x : le_alg 0 x -> norm_alg x = x.
proof: Proof. by rewrite -[x]reprK !piE /= /norm_algcreal => ->. 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)