update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_1 / pr1 / pr1.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_1/pr1/pr1.ma b/matita/matita/contribs/lambdadelta/basic_1/pr1/pr1.ma
index 0b088cc7ba623196dab85b1661760a0cc8c2a698..60dbdbfaad161ffb3a74fc68a1f912d2bc678555 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_1/pr1/pr1.ma
+++ b/matita/matita/contribs/lambdadelta/basic_1/pr1/pr1.ma
@@ -18,7 +18,7 @@ include "basic_1/pr1/props.ma".
 
 include "basic_1/pr0/pr0.ma".
 
-theorem pr1_strip:
+lemma pr1_strip:
  \forall (t0: T).(\forall (t1: T).((pr1 t0 t1) \to (\forall (t2: T).((pr0 t0 
 t2) \to (ex2 T (\lambda (t: T).(pr1 t1 t)) (\lambda (t: T).(pr1 t2 t)))))))
 \def