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src/HOL/Power.thy
changeset 56544 b60d5d119489
parent 56536 aefb4a8da31f
child 57418 6ab1c7cb0b8d 
--- a/src/HOL/Power.thy	Fri Apr 11 23:22:00 2014 +0200
+++ b/src/HOL/Power.thy	Sat Apr 12 17:26:27 2014 +0200
@@ -297,7 +297,7 @@
 
 lemma zero_less_power [simp]:
   "0 < a \<Longrightarrow> 0 < a ^ n"
-  by (induct n) (simp_all add: mult_pos_pos)
+  by (induct n) simp_all
 
 lemma zero_le_power [simp]:
   "0 \<le> a \<Longrightarrow> 0 \<le> a ^ n"
isabelle