src/HOL/Power.thy
changeset 35828 46cfc4b8112e
parent 35216 7641e8d831d2
child 36349 39be26d1bc28
     1.1 --- a/src/HOL/Power.thy	Wed Mar 17 19:37:44 2010 +0100
     1.2 +++ b/src/HOL/Power.thy	Thu Mar 18 12:58:52 2010 +0100
     1.3 @@ -334,7 +334,7 @@
     1.4    "abs ((-a) ^ n) = abs (a ^ n)"
     1.5    by (simp add: power_abs)
     1.6  
     1.7 -lemma zero_less_power_abs_iff [simp, noatp]:
     1.8 +lemma zero_less_power_abs_iff [simp, no_atp]:
     1.9    "0 < abs a ^ n \<longleftrightarrow> a \<noteq> 0 \<or> n = 0"
    1.10  proof (induct n)
    1.11    case 0 show ?case by simp