src/HOLCF/Cprod3.thy
author regensbu
Mon, 28 Nov 1994 19:48:30 +0100
changeset 752 b89462f9d5f1
parent 625 119391dd1d59
child 1168 74be52691d62
permissions -rw-r--r--
---------------------------------------------------------------------- Committing in HOLCF Use new translation mechanism and keyword syntax, cinfix.ML no longer needed. Optimized proofs in Cont.ML Modified Files: Cfun1.ML Cfun2.thy Cont.ML Cprod3.thy Makefile README Sprod3.thy Tr2.thy ccc1.thy ----------------------------------------------------------------------

(*  Title: 	HOLCF/cprod3.thy
    ID:         $Id$
    Author: 	Franz Regensburger
    Copyright   1993 Technische Universitaet Muenchen


Class instance of  * for class pcpo

*)

Cprod3 = Cprod2 +

arities "*" :: (pcpo,pcpo)pcpo			(* Witness cprod2.ML *)

consts  
	cpair        :: "'a -> 'b -> ('a*'b)" (* continuous  pairing *)
	cfst         :: "('a*'b)->'a"
	csnd         :: "('a*'b)->'b"
	csplit       :: "('a->'b->'c)->('a*'b)->'c"

syntax	"@cpair"     :: "'a => 'b => ('a*'b)" ("_#_" [101,100] 100)

translations "x#y" == "cpair[x][y]"

rules 

inst_cprod_pcpo	"(UU::'a*'b) = <UU,UU>"

cpair_def	"cpair  == (LAM x y.<x,y>)"
cfst_def	"cfst   == (LAM p.fst(p))"
csnd_def	"csnd   == (LAM p.snd(p))"	
csplit_def	"csplit == (LAM f p.f[cfst[p]][csnd[p]])"

end