 - lower bound of the interval, must be lesser or equal
 to <code>upper</code> (may be <code>Double.NEGATIVE_INFINITY</code>)</dd><dd><code>upper</code> - upper bound of the interval, must be greater or equal
 to <code>lower</code> (may be <code>Double.POSITIVE_INFINITY</code>)</dd><dd><code>tolerance</code> - tolerance below which points are considered identical.</dd><dt><span class="strong">Since:</span></dt>
  <dd>3.3</dd></dl>
</li>
</ul>
<a name="IntervalsSet(org.apache.commons.math3.geometry.partition