proposition: Lemma denq_int n : denq n%:Q = 1.
proof: Proof. by rewrite -ratzE. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop order ssralg countalg div ssrnum) mathcomp(ssrint prime archimedean)