he
length of <var>p</var>.
</p>
<p>See also <code><a href="#permult">permult</a></code>.
</p>
<p>Example:
</p>
<pre class="example">(%i1) load(&quot;combinatorics&quot;)$
(%i2) perm_inverse ([4, 6, 3, 1, 7, 5, 2, 8]);
(%o2)                [4, 7, 3, 1, 6, 2, 5, 8]
</pre>
<div class=categorybox>

<p>Categories:&nbsp;&nbsp;<a href="maxima_107.html#Category_003a-Package-combinatorics">Package combinatorics</a>
</div>
</p>
</dd></dl>

<p><a name="perm_005flength"></a>
<a name="Item_003a-perm_005flength"></a>
</p