e>x</code> and <code>y</code> of type <a href="index.html#type-t"><code>t</code></a>. Category-theoretically, this is the composition of morphisms.</p></dd></dl></details></div></div></div><dl><dt class="spec value" id="val-(*)"><a href="#val-(*)" class="anchor"></a><code><span class="keyword">val</span> (*) : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dd><p>The infix version of <a href="inde