src/HOL/Nominal/Examples/Lambda_mu.thy

added singleton;

(* $Id$ *)

theory Lambda_mu 
imports "../Nominal" 
begin

section {* Lambda-Mu according to a paper by Gavin Bierman *}

atom_decl var mvar

nominal_datatype trm = Var   "var" 
                     | Lam  "\<guillemotleft>var\<guillemotright>trm"   ("Lam [_]._" [100,100] 100)
                     | App  "trm" "trm" 
                     | Pss  "mvar" "trm"
                     | Act  "\<guillemotleft>mvar\<guillemotright>trm"  ("Act [_]._" [100,100] 100)

end