proposition: Lemma dvdr_gcdr_lcmr a b : gcdr a b %| lcmr a b.
proof: Proof. exact: (dvdr_trans (dvdr_gcdl a b) (dvdr_lcml a b)). 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