src/HOL/Lfp.thy
author nipkow
Fri, 24 Nov 2000 16:49:27 +0100
changeset 10519 ade64af4c57c
parent 10212 33fe2d701ddd
child 11609 3f3d1add4d94
permissions -rw-r--r--
hide many names from Datatype_Universe.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1475
7f5a4cd08209 expanded tabs; renamed subtype to typedef;
clasohm
parents: 1370
diff changeset
     1
(*  Title:      HOL/Lfp.thy
923
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
     2
    ID:         $Id$
1475
7f5a4cd08209 expanded tabs; renamed subtype to typedef;
clasohm
parents: 1370
diff changeset
     3
    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
923
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
     4
    Copyright   1992  University of Cambridge
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
     5
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
     6
The Knaster-Tarski Theorem
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
     7
*)
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
     8
10212
33fe2d701ddd *** empty log message ***
nipkow
parents: 8882
diff changeset
     9
Lfp = mono + Product_Type +
1558
9c6ebfab4e05 added constdefs section
clasohm
parents: 1475
diff changeset
    10
9c6ebfab4e05 added constdefs section
clasohm
parents: 1475
diff changeset
    11
constdefs
9c6ebfab4e05 added constdefs section
clasohm
parents: 1475
diff changeset
    12
  lfp :: ['a set=>'a set] => 'a set
9c6ebfab4e05 added constdefs section
clasohm
parents: 1475
diff changeset
    13
  "lfp(f) == Inter({u. f(u) <= u})"    (*least fixed point*)
9c6ebfab4e05 added constdefs section
clasohm
parents: 1475
diff changeset
    14
923
ff1574a81019 new version of HOL with curried function application
clasohm
parents:
diff changeset
    15
end