X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Flibrary%2Fdecidable_kit%2Feqtype.ma;h=35f404df35aee4414ec589e47801c4cecbeba5a7;hb=c640262bd3affd2a689ce401f4f48baca6421c53;hp=88721632f04270377d0de4dfbdb4d60ca585f2b1;hpb=32d8d8d419e0b910435da275361bb55d49bc43a9;p=helm.git

diff --git a/helm/software/matita/library/decidable_kit/eqtype.ma b/helm/software/matita/library/decidable_kit/eqtype.ma
index 88721632f..35f404df3 100644
--- a/helm/software/matita/library/decidable_kit/eqtype.ma
+++ b/helm/software/matita/library/decidable_kit/eqtype.ma
@@ -95,7 +95,7 @@ cases x (s ps); cases y (t pt); simplify; intros (Est);
 [1: constructor 1; generalize in match ps; rewrite > Est; intros (pt');
     rewrite < (pirrel ? ? ? pt pt' (eqType_decidable bool_eqType)); reflexivity;
 |2: constructor 2; unfold Not; intros (H); destruct H;
-    cases (Est); assumption;]  
+    cases (Est); reflexivity]  
 qed. 
 
 definition sub_eqType ≝ λd : eqType.λp. mk_eqType ? ? (sigma_eq_dec d p).
@@ -132,8 +132,7 @@ cases a; cases b; simplify; intros (H);
 |2,3,5: destruct H;
 |4: rewrite > (b2pT ? ? (eqP d ? ?) H); reflexivity; 
 |6,7: unfold Not; intros (H1); destruct H1
-|8: unfold Not; intros (H1); destruct H1; 
-    rewrite > Hcut in H;  rewrite > cmp_refl in H; destruct H;]
+|8: unfold Not; intros (H1); destruct H1;rewrite > cmp_refl in H; destruct H;]
 qed.
 
 definition option_eqType : eqType → eqType ≝ λd:eqType.mk_eqType ? ? (ocmpP d).