proposition: Lemma carryequiviseqrel : iseqrel carryequiv0.
proof: Proof. split. - split. + intros a b c i j. simpl. rewrite i. apply j. + intros a. simpl. apply idpath. - intros a b i. simpl. rewrite i. apply idpath. Defined.
imports: UniMath.PAdics.lemmas UniMath.PAdics.fps UniMath.PAdics.frac UniMath.PAdics.z_mod_p UniMath.NumberSystems.Integers