proposition: Lemma odivr_some a b c : a %/? b = Some c -> a = b * c.
proof: Proof. by case: odivrP=>// x -> [<-]; rewrite mulrC. 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