X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground_2%2Flib%2Frelations.ma;h=fa8bae34356880363acc0a6369876121b7bbe6d9;hb=d9a1ff8259a7882caa0ffd27282838c00a34cab5;hp=7c63b469f36ecaa02c2f6c11f11e6fb7a9e4e9a9;hpb=c52e807a10cac88866b61fa458936dc5c0f5ee70;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground_2/lib/relations.ma b/matita/matita/contribs/lambdadelta/ground_2/lib/relations.ma
index 7c63b469f..fa8bae343 100644
--- a/matita/matita/contribs/lambdadelta/ground_2/lib/relations.ma
+++ b/matita/matita/contribs/lambdadelta/ground_2/lib/relations.ma
@@ -17,9 +17,6 @@ include "ground_2/lib/logic.ma".
 
 (* GENERIC RELATIONS ********************************************************)
 
-lemma insert_eq: ∀A,a. ∀Q1,Q2:predicate A. (∀a0. Q1 a0 → a = a0 → Q2 a0) → Q1 a → Q2 a.
-/2 width=1 by/ qed-.
-
 definition replace_2 (A) (B): relation3 (relation2 A B) (relation A) (relation B) ≝
                               λR,Sa,Sb. ∀a1,b1. R a1 b1 → ∀a2. Sa a1 a2 → ∀b2. Sb b1 b2 → R a2 b2.