div class="refsect1" lang="en">
<a name="id1223493"></a><h2>Description</h2>
<div class="refsect2" lang="en">
<a name="id1223496"></a><h3>
<a name="id664302-bb"></a><code class="computeroutput">on_invertible</code> public static functions</h3>
<div class="orderedlist"><ol type="1"><li><pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="id664304-bb"></a><span class="identifier">subtract</span><span class="special">(</span><span class="identifier">Type</sp