rue</code>, then <code>areInIncreasingOrder(a, c)</code> is also <code>true</code>.
(Transitive comparability)</li><li>Two elements are <em>incomparable</em> if neither is ordered before the other
according to the predicate. If <code>a</code> and <code>b</code> are incomparable, and <code>b</code>
and <code>c</code> are incomparable, then <code>a</code> and <code>c</code> are also incomparable.
(Transitive incomparability)</li></ul>

<p>The sorting algorithm is not stable. A nonstable sort may change the
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