src/ZF/ex/Acc.thy
author lcp
Fri Aug 12 12:28:46 1994 +0200 (1994-08-12)
changeset 515 abcc438e7c27
child 578 efc648d29dd0
permissions -rw-r--r--
installation of new inductive/datatype sections
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(*  Title: 	ZF/ex/Acc.thy
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    ID:         $Id$
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    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
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    Copyright   1994  University of Cambridge
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Inductive definition of acc(r)
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See Ch. Paulin-Mohring, Inductive Definitions in the System Coq.
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Research Report 92-49, LIP, ENS Lyon.  Dec 1992.
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*)
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Acc = WF + "inductive" +
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consts
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  "acc" :: "i=>i"
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inductive
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  domains "acc(r)" <= "field(r)"
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  intrs
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    vimage  "[| r-``{a}: Pow(acc(r)); a: field(r) |] ==> a: acc(r)"
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  monos     "[Pow_mono]"
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end