X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fng_TPTP%2FGRP002-4.ma;fp=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fng_TPTP%2FGRP002-4.ma;h=f4cb1b59dd401afff9b855b4e22fafba4c456948;hb=0639dda9142d1cf047b07e61fb557e8877aba4d8;hp=7f2fa4d420062c642983c119101204c99c508d8c;hpb=c40f28fe5bfa74fc1fcef986c03fc960793902a5;p=helm.git

diff --git a/helm/software/matita/contribs/ng_TPTP/GRP002-4.ma b/helm/software/matita/contribs/ng_TPTP/GRP002-4.ma
index 7f2fa4d42..f4cb1b59d 100644
--- a/helm/software/matita/contribs/ng_TPTP/GRP002-4.ma
+++ b/helm/software/matita/contribs/ng_TPTP/GRP002-4.ma
@@ -136,7 +136,7 @@ include "logic/equality.ma".
 
 (* ----Definition of the commutator  *)
 ntheorem prove_commutator:
- ∀Univ:Type.∀X:Univ.∀Y:Univ.∀Z:Univ.
+ (∀Univ:Type.∀X:Univ.∀Y:Univ.∀Z:Univ.
 ∀a:Univ.
 ∀b:Univ.
 ∀commutator:∀_:Univ.∀_:Univ.Univ.
@@ -149,26 +149,26 @@ ntheorem prove_commutator:
 ∀H3:∀X:Univ.eq Univ (multiply X identity) X.
 ∀H4:∀X:Univ.∀Y:Univ.∀Z:Univ.eq Univ (multiply (multiply X Y) Z) (multiply X (multiply Y Z)).
 ∀H5:∀X:Univ.eq Univ (multiply (inverse X) X) identity.
-∀H6:∀X:Univ.eq Univ (multiply identity X) X.eq Univ (commutator (commutator a b) b) identity
+∀H6:∀X:Univ.eq Univ (multiply identity X) X.eq Univ (commutator (commutator a b) b) identity)
 .
-#Univ.
-#X.
-#Y.
-#Z.
-#a.
-#b.
-#commutator.
-#identity.
-#inverse.
-#multiply.
-#H0.
-#H1.
-#H2.
-#H3.
-#H4.
-#H5.
-#H6.
-nauto by H0,H1,H2,H3,H4,H5,H6;
+#Univ ##.
+#X ##.
+#Y ##.
+#Z ##.
+#a ##.
+#b ##.
+#commutator ##.
+#identity ##.
+#inverse ##.
+#multiply ##.
+#H0 ##.
+#H1 ##.
+#H2 ##.
+#H3 ##.
+#H4 ##.
+#H5 ##.
+#H6 ##.
+nauto by H0,H1,H2,H3,H4,H5,H6 ##;
 nqed.
 
 (* -------------------------------------------------------------------------- *)