src/CCL/Term.thy
changeset 62020 5d208fd2507d
parent 60770 240563fbf41d
child 62143 3c9a0985e6be
--- a/src/CCL/Term.thy	Thu Dec 31 21:46:31 2015 +0100
+++ b/src/CCL/Term.thy	Fri Jan 01 10:49:00 2016 +0100
@@ -291,7 +291,7 @@
 \<close>
 
 
-subsection \<open>Rules for pre-order @{text "[="}\<close>
+subsection \<open>Rules for pre-order \<open>[=\<close>\<close>
 
 lemma term_porews:
   "inl(a) [= inl(a') \<longleftrightarrow> a [= a'"