(* Title: HOL/Library/Quotient_Syntax.thy Author: Cezary Kaliszyk and Christian Urban *) section ‹Pretty syntax for Quotient operations› theory Quotient_Syntax imports Main begin notation rel_conj (infixr ‹OOO› 75) and map_fun (infixr ‹--->› 55) and rel_fun (infixr ‹===>› 55) end