X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_1%2Fpc3%2Fnf2.ma;h=3ce4180a14f7bf06632125510eb61690d32018e7;hb=8de8cf8adfa6fcda91047eb2c25535893ede046a;hp=0d16aeb79f410690f8eec4cd5ad1d3d5a1113ede;hpb=d2caaf419cb6c92cb5ca8615f8eac4e12f3ab728;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_1/pc3/nf2.ma b/matita/matita/contribs/lambdadelta/basic_1/pc3/nf2.ma
index 0d16aeb79..3ce4180a1 100644
--- a/matita/matita/contribs/lambdadelta/basic_1/pc3/nf2.ma
+++ b/matita/matita/contribs/lambdadelta/basic_1/pc3/nf2.ma
@@ -18,7 +18,7 @@ include "basic_1/pc3/defs.ma".
 
 include "basic_1/nf2/pr3.ma".
 
-theorem pc3_nf2:
+lemma pc3_nf2:
  \forall (c: C).(\forall (t1: T).(\forall (t2: T).((pc3 c t1 t2) \to ((nf2 c 
 t1) \to ((nf2 c t2) \to (eq T t1 t2))))))
 \def
@@ -33,7 +33,7 @@ t2 t1 H5 H1) in (let H7 \def (eq_ind T t2 (\lambda (t: T).(pr3 c t t1)) H5 t1
 H_y0) in (eq_ind_r T t1 (\lambda (t: T).(eq T t1 t)) (refl_equal T t1) t2 
 H_y0))))))))) H2))))))).
 
-theorem pc3_nf2_unfold:
+lemma pc3_nf2_unfold:
  \forall (c: C).(\forall (t1: T).(\forall (t2: T).((pc3 c t1 t2) \to ((nf2 c 
 t2) \to (pr3 c t1 t2)))))
 \def