src/ZF/Ord.thy
author clasohm
Thu, 16 Sep 1993 12:20:38 +0200
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(*  Title: 	ZF/ordinal.thy
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    ID:         $Id$
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    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
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    Copyright   1992  University of Cambridge
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Ordinals in Zermelo-Fraenkel Set Theory 
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*)
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Ord = WF +
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consts
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    Memrel      	::      "i=>i"
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    Transset,Ord        ::      "i=>o"
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rules
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  Memrel_def  	"Memrel(A)   == {z: A*A . EX x y. z=<x,y> & x:y }"
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  Transset_def	"Transset(i) == ALL x:i. x<=i"
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  Ord_def     	"Ord(i)      == Transset(i) & (ALL x:i. Transset(x))"
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end