Lemma CCDRmult_apcompat_l' : ∏ x y z : X, x ≠ 0 → y ≠ z → y * x ≠ z * x. Proof. exact (CDRmult_apcompat_l' (X := ConstructiveCommutativeDivisionRig_ConstructiveDivisionRig X)). Qed.
Require Import UniMath.MoreFoundations.Tactics.