+++ /dev/null
-(**************************************************************************)
-(* ___ *)
-(* ||M|| *)
-(* ||A|| A project by Andrea Asperti *)
-(* ||T|| *)
-(* ||I|| Developers: *)
-(* ||T|| The HELM team. *)
-(* ||A|| http://helm.cs.unibo.it *)
-(* \ / *)
-(* \ / This file is distributed under the terms of the *)
-(* v GNU General Public License Version 2 *)
-(* *)
-(**************************************************************************)
-
-set "baseuri" "cic:/matita/PREDICATIVE-TOPOLOGY/class_le".
-
-include "class_defs.ma".
-
-theorem cle_cl: \forall C,c1,c2. cle ? c1 c2 \to cin C c1 \land cin C c2.
-intros; elim H; clear H; clear c2;
- [| decompose H2 ]; auto.
-qed.
-
-theorem cle_trans: \forall C,c1,c2. cle C c1 c2 \to
- \forall c3. cle ? c3 c1 \to cle ? c3 c2.
-intros 4; elim H; clear H; clear c2;
- [| apply ceq_sing; [||| apply H4 ]]; auto.
-qed.