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src/HOL/Library/Parity.thy
changeset 25502 9200b36280c0
parent 25162 ad4d5365d9d8
child 25571 c9e39eafc7a0 
--- a/src/HOL/Library/Parity.thy	Thu Nov 29 07:55:46 2007 +0100
+++ b/src/HOL/Library/Parity.thy	Thu Nov 29 17:08:26 2007 +0100
@@ -17,7 +17,7 @@
   "odd x \<equiv> \<not> even x"
 
 instance int :: even_odd
-  even_def[presburger]: "even x \<equiv> x mod 2 = 0" ..
+  even_def[presburger]: "even x \<equiv> (x\<Colon>int) mod 2 = 0" ..
 
 instance nat :: even_odd
   even_nat_def[presburger]: "even x \<equiv> even (int x)" ..
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