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src/HOL/Ln.thy
changeset 30273 ecd6f0ca62ea
parent 29667 53103fc8ffa3
child 31338 d41a8ba25b67 
--- a/src/HOL/Ln.thy	Thu Mar 05 00:16:28 2009 +0100
+++ b/src/HOL/Ln.thy	Wed Mar 04 17:12:23 2009 -0800
@@ -98,7 +98,7 @@
     also have "... = x ^ 2 / 2 * (1 / 2 * (1 / 2) ^ n)"
       by auto
     also have "(1::real) / 2 * (1 / 2) ^ n = (1 / 2) ^ (Suc n)"
-      by (rule realpow_Suc [THEN sym])
+      by (rule power_Suc [THEN sym])
     finally show ?thesis .
   qed
 qed
isabelle