+++ /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 "delayed_updating/unwind3/unwind_prototerm_eq.ma".
-include "delayed_updating/syntax/prototerm_constructors.ma".
-include "delayed_updating/relocation/sbr_push_uni.ma".
-
-(* UNWIND FOR PROTOTERM *****************************************************)
-
-(* Constructions with constructors for prototerm ****************************)
-
-lemma unwind_iref_sn (f) (t:prototerm) (n:pnat):
- ▼[f❘@❨n❩⫯❘f]t ⊆ ▼[f](𝛗n.t).
-#f #t #n #p * #q #Hq #H0 destruct
-@(ex2_intro … (𝗱n◗𝗺◗q))
-/2 width=1 by in_comp_iref/
-qed-.
-
-lemma unwind_iref_dx (f) (t) (n:pnat):
- ▼[f](𝛗n.t) ⊆ ▼[f❘@❨n❩⫯❘f]t.
-#f #t #n #p * #q #Hq #H0 destruct
-elim (in_comp_inv_iref … Hq) -Hq #p #Hp #Ht destruct
-/2 width=1 by in_comp_unwind_bi/
-qed-.
-
-lemma unwind_iref (f) (t) (n:pnat):
- ▼[f❘@❨n❩⫯❘f]t ⇔ ▼[f](𝛗n.t).
-/3 width=1 by conj, unwind_iref_sn, unwind_iref_dx/
-qed.
-
-lemma unwind_iref_id (t) (n:pnat):
- ▼[𝐮❨n❩]t ⇔ ▼[𝐢](𝛗n.t).
-// qed.