1.1 --- a/src/HOL/NumberTheory/WilsonRuss.thy Tue May 11 14:00:02 2004 +0200
1.2 +++ b/src/HOL/NumberTheory/WilsonRuss.thy Tue May 11 20:11:08 2004 +0200
1.3 @@ -86,7 +86,7 @@
1.4
1.5 lemma inv_not_p_minus_1_aux: "[a * (p - 1) = 1] (mod p) = [a = p - 1] (mod p)"
1.6 apply (unfold zcong_def)
1.7 - apply (simp add: Ring_and_Field.diff_diff_eq diff_diff_eq2 zdiff_zmult_distrib2)
1.8 + apply (simp add: OrderedGroup.diff_diff_eq diff_diff_eq2 zdiff_zmult_distrib2)
1.9 apply (rule_tac s = "p dvd -((a + 1) + (p * -a))" in trans)
1.10 apply (simp add: mult_commute)
1.11 apply (subst zdvd_zminus_iff)