f="argument-2-E/index.html">E</a> : <a href="../../../Interface/index.html#module-type-EQ">Interface.EQ</a> <span class="keyword">with</span> <span class="keyword">type</span> <a href="argument-2-E/index.html#type-t">t</a> = <a href="argument-1-J/index.html#type-t">J.t</a></code></li></ul><h3 class="heading">Signature</h3><dl><dt class="spec value" id="val-associativity"><a href="#val-associativity" class="anchor"></a><code><span class="keyword">val</span> associativity : <a href="argument-1-J/index.html#ty