author | clasohm |
Thu, 16 Sep 1993 12:20:38 +0200 | |
changeset 0 | a5a9c433f639 |
child 30 | d49df4181f0d |
permissions | -rw-r--r-- |
0 | 1 |
(* 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 |