diff -r 0bc1db726f81 -r f89d1c52d647 Quotient-Paper/Paper.thy
--- a/Quotient-Paper/Paper.thy	Mon Aug 30 11:02:13 2010 +0900
+++ b/Quotient-Paper/Paper.thy	Mon Aug 30 15:59:16 2010 +0900
@@ -23,7 +23,7 @@
 notation (latex output)
   rel_conj ("_ \<circ>\<circ>\<circ> _" [53, 53] 52) and
   pred_comp ("_ \<circ>\<circ> _" [1, 1] 30) and
-  "op -->" (infix "\<longrightarrow>" 100) and
+  implies (infix "\<longrightarrow>" 100) and
   "==>" (infix "\<Longrightarrow>" 100) and
   fun_map ("_ \<singlearr> _" 51) and
   fun_rel ("_ \<doublearr> _" 51) and