update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_1 / nf2 / pr3.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_1/nf2/pr3.ma b/matita/matita/contribs/lambdadelta/basic_1/nf2/pr3.ma
index 8c602dfe0ec8e1b5d74e14560a87f8b34b8d00ae..5c6a686e908ddad6b7e0317dbcedad85389c2146 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_1/nf2/pr3.ma
+++ b/matita/matita/contribs/lambdadelta/basic_1/nf2/pr3.ma
@@ -18,7 +18,7 @@ include "basic_1/nf2/defs.ma".
 
 include "basic_1/pr3/pr3.ma".
 
-theorem nf2_pr3_unfold:
+lemma nf2_pr3_unfold:
  \forall (c: C).(\forall (t1: T).(\forall (t2: T).((pr3 c t1 t2) \to ((nf2 c 
 t1) \to (eq T t1 t2)))))
 \def