- exclusion binder in local environments

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / syntax / tdeq_ext.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_ext.ma b/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_ext.ma
index 4783017ee8c28fc10c7e2eaafeab6a6ea266ba24..c4ed53ed073eab1357c5f7a9bf1dbd302080095b 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_ext.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_ext.ma
@@ -20,9 +20,12 @@ include "basic_2/syntax/lenv_ext2.ma".
 definition cdeq: ∀h. sd h → relation3 lenv term term ≝
                  λh,o,L. tdeq h o.
 
+definition tdeq_ext: ∀h. sd h → relation bind ≝
+                     λh,o. ext2 (tdeq h o).
+
 definition cdeq_ext: ∀h. sd h → relation3 lenv bind bind ≝
                      λh,o. cext2 (cdeq h o).
 
 interpretation
-   "degree-based equivalence (binders)"
-   'LazyEq h o I1 I2 = (ext2 (tdeq h o) I1 I2).
+   "degree-based equivalence (binder)"
+   'LazyEq h o I1 I2 = (tdeq_ext h o I1 I2).