NEWS
changeset 13158 8e86582a90d1
parent 13042 d8a345d9e067
child 13188 596776f878f8
--- a/NEWS	Fri May 17 11:25:07 2002 +0200
+++ b/NEWS	Fri May 17 11:36:32 2002 +0200
@@ -1,7 +1,13 @@
-
 Isabelle NEWS -- history user-relevant changes
 ==============================================
 
+*** HOL ***
+
+* arith(_tac) does now know about div 2 and mod 2 on type nat.
+  It can solve simple goals like "0 < n ==> n div 2 < (n::nat)"
+  but fails if divisibility plays a role like in
+  "n div 2 + (n+1) div 2 = (n::nat)".
+
 New in Isabelle2002 (March 2002)
 --------------------------------