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src/HOL/ex/Sqrt_Script.thy
changeset 36778 739a9379e29b
parent 32479 521cc9bf2958
child 57514 bdc2c6b40bf2 
--- a/src/HOL/ex/Sqrt_Script.thy	Sun May 09 17:47:43 2010 -0700
+++ b/src/HOL/ex/Sqrt_Script.thy	Sun May 09 22:51:11 2010 -0700
@@ -61,7 +61,7 @@
   apply (rule notI)
   apply (erule Rats_abs_nat_div_natE)
   apply (simp del: real_of_nat_mult
-              add: real_abs_def divide_eq_eq prime_not_square real_of_nat_mult [symmetric])
+              add: abs_if divide_eq_eq prime_not_square real_of_nat_mult [symmetric])
   done
 
 lemmas two_sqrt_irrational =
isabelle