ss="reference external" href="https://en.wikipedia.org/wiki/Differentiable_manifold">differentiable manifold</a> to another such that both the function and its inverse are <a class="reference external" href="https://en.wikipedia.org/wiki/Smooth_function">smooth</a>.</p></li>
</ul>
</section>
<section id="reversible-invertible-models">
<h3><span class="section-number">7.12.5.2. </span>reversible/invertible models<a class="headerlink" href="#reversible-invertible-models" title="Link to this heading">#</a></h3