d><td valign="top"><a href="maxima_60.html#SEC292">60.5 Definitions for Peano maps</a></td></tr>
<tr><td></td><td valign="top"><a href="maxima_11.html#IDX431"><code>sign</code></a></td><td valign="top"><a href="maxima_11.html#SEC61">11.3 Functions and Variables for Facts</a></td></tr>
<tr><td></td><td valign="top"><a href="maxima_10.html#IDX303"><code>signum</code></a></td><td valign="top"><a href="maxima_10.html#SEC50">10.1 Functions for Numbers</a></td></tr>
<tr><td></td><td valign="top"><a href="maxima_2