proposition: Lemma coprimer_mull a b c : coprimer (b * c) a = coprimer b a && coprimer c a.
proof: Proof. by rewrite !(coprimer_sym _ a) coprimer_mulr. 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