<a href="argument-2-E/index.html">E</a> : <a href="../../../Interface/index.html#module-type-EQ1">Interface.EQ1</a> <span class="keyword">with</span> <span class="keyword">type</span> <span>'a <a href="argument-2-E/index.html#type-t">t</a></span> = <span><span class="type-var">'a</span> <a href="argument-1-A/index.html#type-t">A.t</a></span></code></li></ul><h3 class="heading">Signature</h3><dl><dt class="spec value" id="val-commutativity"><a href="#val-commutativity" class="anchor"></a><code><span class="k