+++ /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 *)
-(* *)
-(**************************************************************************)
-
-include "ground/relocation/gr_tl_eq.ma".
-
-(* TAIL FOR GENERIC RELOCATION MAPS *****************************************)
-
-(* Main constructions with gr_eq ********************************************)
-
-(*** eq_trans *)
-corec theorem gr_eq_trans: Transitive … gr_eq.
-#f1 #f * -f1 -f
-#f1 #f #g1 #g #Hf1 #H1 #H #f2 #Hf2
-[ cases (gr_eq_inv_push_sn … Hf2 … H)
-| cases (gr_eq_inv_next_sn … Hf2 … H)
-] -g
-/3 width=5 by gr_eq_push, gr_eq_next/
-qed-.
-
-(*** eq_canc_sn *)
-theorem gr_eq_canc_sn (f2): gr_eq_repl_back (λf. f ≡ f2).
-/3 width=3 by gr_eq_trans, gr_eq_sym/ qed-.
-
-(*** eq_canc_dx *)
-theorem gr_eq_canc_dx (f1): gr_eq_repl_fwd (λf. f1 ≡ f).
-/3 width=5 by gr_eq_canc_sn, gr_eq_repl_sym/ qed-.