+++ /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_2/relocation/mr2.ma".
-
-(* MULTIPLE RELOCATION WITH PAIRS *******************************************)
-
-rec definition pluss (cs:mr2) (i:nat) on cs ≝ match cs with
-[ nil2 ⇒ ◊
-| cons2 l m cs ⇒ ❨l + i,m❩;pluss cs i
-].
-
-interpretation "plus (multiple relocation with pairs)"
- 'plus x y = (pluss x y).
-
-(* Basic properties *********************************************************)
-
-lemma pluss_SO2: ∀l,m,cs. (❨l,m❩;cs) + 1 = ❨↑l,m❩;cs + 1.
-normalize // qed.
-
-(* Basic inversion lemmas ***************************************************)
-
-lemma pluss_inv_nil2: ∀i,cs. cs + i = ◊ → cs = ◊.
-#i * // normalize
-#l #m #cs #H destruct
-qed.
-
-lemma pluss_inv_cons2: ∀i,l,m,cs2,cs. cs + i = ❨l,m❩;cs2 →
- ∃∃cs1. cs1 + i = cs2 & cs = ❨l - i,m❩;cs1.
-#i #l #m #cs2 *
-[ normalize #H destruct
-| #l1 #m1 #cs1 whd in ⊢ (??%?→?); #H destruct
- <minus_plus_m_m /2 width=3 by ex2_intro/
-]
-qed-.