;x_{jk}\leq v_{i+1}^*\\
        \mu_{\bigtriangledown_{\uparrow}}(x_{jk}),&amp;v_{i+1}^*&lt;x_{jk}\leq\mathrm{max}\\
        0,&amp;\mathrm{otherwise}
    \end{cases},
\end{equation}\]</span> where <span class="math inline">\(v_i^*\)</span> and <span class="math inline">\(v_{i+1}^*\)</span> are defined in Definition .</p>
</div>
<div id="gaussain-membership-function" class="section level3">
<h3 class="hasAnchor">
<a href="#gaussain-membership-function" class="anchor"></a>Gaussain Membership Function</h3>
<p