src/HOL/Power.thy
changeset 35216 7641e8d831d2
parent 35028 108662d50512
child 35828 46cfc4b8112e
     1.1 --- a/src/HOL/Power.thy	Thu Feb 18 13:29:59 2010 -0800
     1.2 +++ b/src/HOL/Power.thy	Thu Feb 18 14:21:44 2010 -0800
     1.3 @@ -332,7 +332,7 @@
     1.4  
     1.5  lemma abs_power_minus [simp]:
     1.6    "abs ((-a) ^ n) = abs (a ^ n)"
     1.7 -  by (simp add: abs_minus_cancel power_abs) 
     1.8 +  by (simp add: power_abs)
     1.9  
    1.10  lemma zero_less_power_abs_iff [simp, noatp]:
    1.11    "0 < abs a ^ n \<longleftrightarrow> a \<noteq> 0 \<or> n = 0"