proposition: Lemma dvdr1 a : (a %| 1) = (a %= 1).
proof: Proof. by rewrite /eqd dvd1r andbT. 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