File: E0-ORDINALP.html

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<head><title>E0-ORDINALP.html  --  ACL2 Version 3.1</title></head>
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<h2>E0-ORDINALP</h2>the old recognizer for ACL2 ordinals
<pre>Major Section:  <a href="PROGRAMMING.html">PROGRAMMING</a>
</pre><p>

See <a href="O-P.html">o-p</a> for the current recognizer for ACL2 ordinals.
<p>
The functions <code>e0-ordinalp</code> and <code><a href="E0-ORD-_lt_.html">e0-ord-&lt;</a></code> were replaced in ACL2
Version_2.8 by <code><a href="O-P.html">o-p</a></code> and <code><a href="O_lt_.html">o&lt;</a></code>, respectively.  However, books created
before that version used the earlier functions for termination proofs; the
old functions might be of use in these cases.  To use the old functions in
termination proofs, include the book <code>books/ordinals/e0-ordinal</code> and
execute the event <code>(set-well-founded-relation e0-ord-&lt;)</code>
(see <a href="SET-WELL-FOUNDED-RELATION.html">set-well-founded-relation</a>).  For a more thorough discussion of
these functions, see the documentation at the end of
<code>books/ordinals/e0-ordinal.lisp</code>.
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