src/HOL/Library/Quotient_Syntax.thy

+(*  Title:      Quotient_Syntax.thy
+    Author:     Cezary Kaliszyk and Christian Urban
+*)
+
+header {* Pretty syntax for Quotient operations *}
+
+(*<*)
+theory Quotient_Syntax
+imports Main
+begin
+
+notation
+  rel_conj (infixr "OOO" 75) and
+  fun_map (infixr "--->" 55) and
+  fun_rel (infixr "===>" 55)
+
+end
+(*>*)