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src/HOL/Library/Set_Algebras.thy
changeset 63680 6e1e8b5abbfa
parent 63485 ea8dfb0ed10e
child 64267 b9a1486e79be 
--- a/src/HOL/Library/Set_Algebras.thy	Fri Aug 12 17:49:02 2016 +0200
+++ b/src/HOL/Library/Set_Algebras.thy	Fri Aug 12 17:53:55 2016 +0200
@@ -13,7 +13,7 @@
 text \<open>
   This library lifts operations like addition and multiplication to sets. It
   was designed to support asymptotic calculations. See the comments at the top
-  of @{file "BigO.thy"}.
+  of \<^file>\<open>BigO.thy\<close>.
 \<close>
 
 instantiation set :: (plus) plus
isabelle