--- a/src/CCL/Wfd.thy Sat Sep 17 14:02:31 2005 +0200
+++ b/src/CCL/Wfd.thy Sat Sep 17 17:35:26 2005 +0200
@@ -1,12 +1,15 @@
-(* Title: CCL/wfd.thy
+(* Title: CCL/Wfd.thy
ID: $Id$
Author: Martin Coen, Cambridge University Computer Laboratory
Copyright 1993 University of Cambridge
-
-Well-founded relations in CCL.
*)
-Wfd = Trancl + Type +
+header {* Well-founded relations in CCL *}
+
+theory Wfd
+imports Trancl Type Hered
+uses ("wfd.ML") ("genrec.ML") ("typecheck.ML") ("eval.ML")
+begin
consts
(*** Predicates ***)
@@ -18,17 +21,25 @@
NatPR :: "i set"
ListPR :: "i set => i set"
-rules
+axioms
- Wfd_def
+ Wfd_def:
"Wfd(R) == ALL P.(ALL x.(ALL y.<y,x> : R --> y:P) --> x:P) --> (ALL a. a:P)"
- wf_def "wf(R) == {x. x:R & Wfd(R)}"
+ wf_def: "wf(R) == {x. x:R & Wfd(R)}"
- wmap_def "wmap(f,R) == {p. EX x y. p=<x,y> & <f(x),f(y)> : R}"
- lex_def
+ wmap_def: "wmap(f,R) == {p. EX x y. p=<x,y> & <f(x),f(y)> : R}"
+ lex_def:
"ra**rb == {p. EX a a' b b'. p = <<a,b>,<a',b'>> & (<a,a'> : ra | (a=a' & <b,b'> : rb))}"
- NatPR_def "NatPR == {p. EX x:Nat. p=<x,succ(x)>}"
- ListPR_def "ListPR(A) == {p. EX h:A. EX t:List(A). p=<t,h$t>}"
+ NatPR_def: "NatPR == {p. EX x:Nat. p=<x,succ(x)>}"
+ ListPR_def: "ListPR(A) == {p. EX h:A. EX t:List(A). p=<t,h$t>}"
+
+ML {* use_legacy_bindings (the_context ()) *}
+
+use "wfd.ML"
+use "genrec.ML"
+use "typecheck.ML"
+use "eval.ML"
+
end