src/HOL/Finite.thy
author clasohm
Mon, 05 Feb 1996 21:27:16 +0100
changeset 1475 7f5a4cd08209
parent 1370 7361ac9b024d
child 1531 e5eb247ad13c
permissions -rw-r--r--
expanded tabs; renamed subtype to typedef; incorporated Konrad's changes

(*  Title:      HOL/Finite.thy
    ID:         $Id$
    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
    Copyright   1994  University of Cambridge

Finite powerset operator
*)

Finite = Lfp +
consts Fin :: 'a set => 'a set set

inductive "Fin(A)"
  intrs
    emptyI  "{} : Fin(A)"
    insertI "[| a: A;  b: Fin(A) |] ==> insert a b : Fin(A)"

end