proposition: Lemma denq_norm x : denq `|x| = denq x.
proof: Proof. by rewrite normrEsign denq_mulr_sign. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop order ssralg countalg div ssrnum) mathcomp(ssrint prime archimedean)