</a>Mathematical Formulation</h2>
<p>For those who prefer to look at it mathematically, this section presents the complete definitions of the theory used in the core algorithms of the package. <br><br><strong>Definition 1 (Membership Function)</strong>. Let <span class="math inline">\(\mathscr{X}\subseteq \mathbb{R}\)</span> and <span class="math inline">\(\mathscr{Y}\subseteq \mathbb{R}_{[0,1]}\)</span>, then <span class="math inline">\(\mu:\mathscr{X}\rightarrow\mathscr{Y}\)</span> is a <em>membership fun