proposition: Lemma absz_denq_gt0 r : (0 < `|denq r|)%N.
proof: Proof. by rewrite absz_gt0 denq_eq0. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq zmodp) mathcomp(path choice fintype tuple finset bigop order) mathcomp(ssralg ssrint ssrnum rat) CoqEAL(hrel param refinements pos)