Lemma iscotrans_CFap : ∏ x y z : X, x ≠ z → x ≠ y ∨ y ≠ z. Proof. exact (iscotrans_CCDRap (X := ConstructiveField_ConstructiveCommutativeDivisionRig X)). Qed.
Require Import UniMath.MoreFoundations.Tactics.