proposition: Lemma coprimezXr k m n : coprimez m n -> coprimez m (n ^+ k).
proof: Proof. by rewrite !(coprimez_sym m); apply: coprimezXl. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop prime order) mathcomp(ssralg poly ssrnum ssrint archimedean rat matrix) mathcomp(polydiv perm zmodp mxalgebra vector)