X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Flib%2Flogic.ma;h=4cf0e0096bbbadb708bff33baedb38741354c601;hb=caf822cbe34e204e6d1b72e272373b561c1a565a;hp=fc2e2ea85ca75abccc27963613769ea412dd60a5;hpb=6604a232815858a6c75dd25ac45abd68438077ff;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/lib/logic.ma b/matita/matita/contribs/lambdadelta/ground/lib/logic.ma
index fc2e2ea85..4cf0e0096 100644
--- a/matita/matita/contribs/lambdadelta/ground/lib/logic.ma
+++ b/matita/matita/contribs/lambdadelta/ground/lib/logic.ma
@@ -28,8 +28,9 @@ interpretation
 
 (* LOGIC ********************************************************************)
 
-(* Constructions with And ***************************************************)
+(* Constructions with land **************************************************)
 
-lemma commutative_and: ∀A,B. A ∧ B → B ∧ A.
+lemma commutative_and (A) (B):
+      A ∧ B → B ∧ A.
 #A #B * /2 width=1 by conj/
 qed-.