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src/HOL/Analysis/measurable.ML
changeset 74561 8e6c973003c8
parent 74152 069f6b2c5a07
child 74632 8ab92e40dde6 
--- a/src/HOL/Analysis/measurable.ML	Wed Oct 20 17:11:46 2021 +0200
+++ b/src/HOL/Analysis/measurable.ML	Wed Oct 20 18:13:17 2021 +0200
@@ -56,7 +56,6 @@
     dest_thms = Thm.item_net,
     cong_thms = Thm.item_net,
     preprocessors = [] };
-  val extend = I;
   fun merge ({measurable_thms = t1, dest_thms = dt1, cong_thms = ct1, preprocessors = i1 },
       {measurable_thms = t2, dest_thms = dt2, cong_thms = ct2, preprocessors = i2 }) : T = {
     measurable_thms = Item_Net.merge (t1, t2),
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