proposition: Lemma intrKfloor : cancel intr floor.
proof: Proof. by move=> m; apply: floor_def; rewrite lexx rmorphD ltrDl ltr01. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop order ssralg poly ssrnum ssrint)