From a8f4987a72bd7aa170eba664316a3832d6818570 Mon Sep 17 00:00:00 2001
From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Tue, 29 Sep 2009 08:22:56 +0000
Subject: [PATCH] It does not work recursively...

---
 helm/software/matita/nlibrary/sets/sets.ma | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/helm/software/matita/nlibrary/sets/sets.ma b/helm/software/matita/nlibrary/sets/sets.ma
index 965217737..c21751c21 100644
--- a/helm/software/matita/nlibrary/sets/sets.ma
+++ b/helm/software/matita/nlibrary/sets/sets.ma
@@ -187,7 +187,7 @@ interpretation "prop21 mem" 'prop2 l r = (prop21_mem ??????? l r).
     
 nlemma test: ∀U.∀A,B:qpowerclass U. A ∩ B = A →
  ∀x,y. x=y → x ∈ A → y ∈ A ∩ B.
- #U; #A; #B; #H; #x; #y; #K; #K2; napply (. K^-1‡H); nassumption;
+ #U; #A; #B; #H; #x; #y; #K; #K2; napply (. K^-1‡(H^-1‡#)); nassumption;
 nqed. 
 
 (*
-- 
2.39.2