<span class="chapter-number">8</span>&nbsp; <span class="chapter-title">Infinite Sets</span></a>
  </div>
</li>
        <li class="sidebar-item">
  <div class="sidebar-item-container"> 
  <a href="./Appendix.html" class="sidebar-item-text sidebar-link">Appendix</a>
  </div>
</li>
    </ul>
    </div>
</nav>
<!-- margin-sidebar -->
    <div id="quarto-margin-sidebar" class="sidebar margin-sidebar">
        
    </div>
<!-- main -->
<main class="content" id="quarto-document-content">
<div class="hidden">
$$
\