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src/HOL/Hyperreal/MacLaurin.thy
changeset 20217 25b068a99d2b
parent 19765 dfe940911617
child 20792 add17d26151b 
--- a/src/HOL/Hyperreal/MacLaurin.thy	Wed Jul 26 13:31:07 2006 +0200
+++ b/src/HOL/Hyperreal/MacLaurin.thy	Wed Jul 26 19:23:04 2006 +0200
@@ -390,7 +390,7 @@
 
 lemma mod_exhaust_less_4:
      "m mod 4 = 0 | m mod 4 = 1 | m mod 4 = 2 | m mod 4 = (3::nat)"
-by (case_tac "m mod 4", auto, arith)
+by auto
 
 lemma Suc_Suc_mult_two_diff_two [rule_format, simp]:
      "0 < n --> Suc (Suc (2 * n - 2)) = 2*n"
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