>HEYTING_ALGEBRA_F</a></code></div><div class="spec module" id="module-Involutive_Heyting_Algebra"><a href="#module-Involutive_Heyting_Algebra" class="anchor"></a><code><span class="keyword">module</span> <a href="Involutive_Heyting_Algebra/index.html">Involutive_Heyting_Algebra</a> : <span class="keyword">functor</span> (<a href="Involutive_Heyting_Algebra/argument-1-Ok/index.html">Ok</a> : <a href="../../Interface/index.html#module-type-INVOLUTIVE_HEYTING_ALGEBRA">Interface.INVOLUTIVE_HEYTING_ALGEBRA</a>)