update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_1 / iso / props.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_1/iso/props.ma b/matita/matita/contribs/lambdadelta/basic_1/iso/props.ma
index f18572e1e1e8204a54ec7ee8a8eb38ab2c3618cc..baef0f83321523681438f4b088596fbead267dfe 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_1/iso/props.ma
+++ b/matita/matita/contribs/lambdadelta/basic_1/iso/props.ma
@@ -18,7 +18,7 @@ include "basic_1/T/fwd.ma".
 
 include "basic_1/iso/fwd.ma".
 
-theorem iso_refl:
+lemma iso_refl:
  \forall (t: T).(iso t t)
 \def
  \lambda (t: T).(T_ind (\lambda (t0: T).(iso t0 t0)) (\lambda (n: