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src/HOL/Number_Theory/Quadratic_Reciprocity.thy
changeset 66801 f3fda9777f9a
parent 65416 f707dbcf11e3
child 66837 6ba663ff2b1c 
--- a/src/HOL/Number_Theory/Quadratic_Reciprocity.thy	Sun Oct 08 22:28:19 2017 +0200
+++ b/src/HOL/Number_Theory/Quadratic_Reciprocity.thy	Sun Oct 08 22:28:20 2017 +0200
@@ -381,7 +381,7 @@
       from that have *: "(fst x + (snd x - 1) * int p) mod int p = fst x"
         by force
       from that have "(fst x + (snd x - 1) * int p) div int p + 1 = snd x"
-        by (auto simp: semiring_numeral_div_class.div_less)
+        by (auto simp: div_pos_pos_trivial)
       with * show "f_3 (g_3 x) = x"
         by (simp add: f_3_def g_3_def)
     qed
isabelle