proposition: Lemma dvdrU b a : b %= 1 -> a %| b = (a %= 1).
proof: Proof. by move=> b1; rewrite (eqd_dvd (eqdd _) b1) dvdr1. Qed.
imports: HB(structures) Coq(ssreflect ssrfun ssrbool Arith.Wf_nat) mathcomp(eqtype ssrnat div seq path) mathcomp(ssralg fintype perm tuple choice generic_quotient) mathcomp(matrix bigop zmodp mxalgebra poly) stronglydiscrete