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src/ZF/ZF.thy
changeset 41310 65631ca437c9
parent 41229 d797baa3d57c
child 41779 a68f503805ed 
--- a/src/ZF/ZF.thy	Mon Dec 20 15:24:25 2010 +0100
+++ b/src/ZF/ZF.thy	Mon Dec 20 16:44:33 2010 +0100
@@ -17,7 +17,7 @@
 
 consts
 
-  "0"         :: "i"                  ("0")   --{*the empty set*}
+  zero        :: "i"                  ("0")   --{*the empty set*}
   Pow         :: "i => i"                     --{*power sets*}
   Inf         :: "i"                          --{*infinite set*}
isabelle