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src/HOL/Power.thy
changeset 54147 97a8ff4e4ac9
parent 53076 47c9aff07725
child 54249 ce00f2fef556 
--- a/src/HOL/Power.thy	Fri Oct 18 10:35:57 2013 +0200
+++ b/src/HOL/Power.thy	Fri Oct 18 10:43:20 2013 +0200
@@ -530,7 +530,7 @@
   "abs ((-a) ^ n) = abs (a ^ n)"
   by (simp add: power_abs)
 
-lemma zero_less_power_abs_iff [simp, no_atp]:
+lemma zero_less_power_abs_iff [simp]:
   "0 < abs a ^ n \<longleftrightarrow> a \<noteq> 0 \<or> n = 0"
 proof (induct n)
   case 0 show ?case by simp
isabelle