proposition: Lemma lez_floor m d : d != 0 -> (m %/ d)%Z * d <= m.
proof: Proof. by rewrite -subr_ge0; apply: modz_ge0. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop prime order) mathcomp(ssralg poly ssrnum ssrint archimedean rat matrix) mathcomp(polydiv perm zmodp mxalgebra vector)