</span> <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-Boolean_Algebra"><a href="#module-Boolean_Algebra" class="anchor"></a><code><span class="keyword">module</span> <a href="Boolean_Algebra/index.html">Boolean_Algebra</a> : <span class="keyword">functor</span> (<a href="Boolean_Algebra/argument-1-BA/index.html">BA</a> : <a href="../../../Bastet/Interface/index.html#module-type-BOOLEAN_ALGEBRA">Bastet.Interface.BOOLEAN_ALGEBRA</a>) <spa