--- a/src/HOL/NumberTheory/WilsonBij.thy Tue May 11 14:00:02 2004 +0200
+++ b/src/HOL/NumberTheory/WilsonBij.thy Tue May 11 20:11:08 2004 +0200
@@ -75,7 +75,7 @@
lemma aux: "[a * (p - 1) = 1] (mod p) = [a = p - 1] (mod p)"
-- {* same as @{text WilsonRuss} *}
apply (unfold zcong_def)
- apply (simp add: Ring_and_Field.diff_diff_eq diff_diff_eq2 zdiff_zmult_distrib2)
+ apply (simp add: OrderedGroup.diff_diff_eq diff_diff_eq2 zdiff_zmult_distrib2)
apply (rule_tac s = "p dvd -((a + 1) + (p * -a))" in trans)
apply (simp add: mult_commute)
apply (subst zdvd_zminus_iff)