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src/HOL/Power.thy
changeset 47220 52426c62b5d0
parent 47209 4893907fe872
child 47241 243b33052e34 
--- a/src/HOL/Power.thy	Fri Mar 30 12:02:23 2012 +0200
+++ b/src/HOL/Power.thy	Fri Mar 30 12:32:35 2012 +0200
@@ -185,7 +185,7 @@
 
 lemma power_minus_Bit1:
   "(- x) ^ numeral (Num.Bit1 k) = - (x ^ numeral (Num.Bit1 k))"
-  by (simp only: nat_number(4) power_Suc power_minus_Bit0 mult_minus_left)
+  by (simp only: eval_nat_numeral(3) power_Suc power_minus_Bit0 mult_minus_left)
 
 lemma power_neg_numeral_Bit0 [simp]:
   "neg_numeral k ^ numeral (Num.Bit0 l) = numeral (Num.pow k (Num.Bit0 l))"
isabelle