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<head><title>O-FIRST-COEFF.html -- ACL2 Version 3.1</title></head>
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<h2>O-FIRST-COEFF</h2>returns the first coefficient of an ordinal
<pre>Major Section: <a href="PROGRAMMING.html">PROGRAMMING</a>
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<p>
An ACL2 ordinal is either a natural number or, for an infinite ordinal, a
list whose elements are exponent-coefficient pairs (see <a href="O-P.html">o-p</a>). In the latter
case, this function returns the <code><a href="CDR.html">cdr</a></code> of the first pair in the list. In
the case of a natural number, this function returns the ordinal itself
(since a natural number, n, can be thought of as (w^0)n).<p>
For the corresponding exponent, see <a href="O-FIRST-EXPT.html">o-first-expt</a>.
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