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src/HOL/Algebra/Exact_Sequence.thy
changeset 80914 d97fdabd9e2b
parent 70041 2b23dd163c7f
child 81142 6ad2c917dd2e 
--- a/src/HOL/Algebra/Exact_Sequence.thy	Fri Sep 20 19:07:10 2024 +0200
+++ b/src/HOL/Algebra/Exact_Sequence.thy	Fri Sep 20 19:51:08 2024 +0200
@@ -22,7 +22,7 @@
 
 abbreviation exact_seq_arrow ::
   "('a \<Rightarrow> 'a) \<Rightarrow> 'a monoid list \<times> ('a \<Rightarrow> 'a) list \<Rightarrow>  'a monoid \<Rightarrow> 'a monoid list \<times> ('a \<Rightarrow> 'a) list"
-  ("(3_ / \<longlongrightarrow>\<index> _)" [1000, 60])
+  (\<open>(3_ / \<longlongrightarrow>\<index> _)\<close> [1000, 60])
   where "exact_seq_arrow  f t G \<equiv> (G # (fst t), f # (snd t))"
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