]> matita.cs.unibo.it Git - helm.git/blobdiff - matita/matita/contribs/lambdadelta/basic_2/syntax/bind.ma
syntactic components detached from basic_2 become static_2
[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / syntax / bind.ma
diff --git a/matita/matita/contribs/lambdadelta/basic_2/syntax/bind.ma b/matita/matita/contribs/lambdadelta/basic_2/syntax/bind.ma
deleted file mode 100644 (file)
index 487722c..0000000
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-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||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 "basic_2/syntax/term.ma".
-
-(* BINDERS FOR LOCAL ENVIRONMENTS ******************************************)
-
-inductive bind: Type[0] ≝
-| BUnit: bind1 → bind
-| BPair: bind2 → term → bind
-.
-
-(* Basic properties ********************************************************)
-
-lemma eq_bind_dec: ∀I1,I2:bind. Decidable (I1 = I2).
-* #I1 [2: #V1 ] * #I2 [2,4: #V2 ]
-[1: elim (eq_bind2_dec I1 I2) #HI
-    [ elim (eq_term_dec V1 V2) #HV ]
-|4: elim (eq_bind1_dec I1 I2) #HI
-]
-/2 width=1 by or_introl/
-@or_intror #H destruct /2 width=1 by/
-qed-.