ors" id="toc-vectors" class="nav-link" data-scroll-target="#vectors">Vectors</a></li>
  <li><a href="#matrices" id="toc-matrices" class="nav-link" data-scroll-target="#matrices">Matrices</a></li>
  <li><a href="#matrices-with-one-multiple-index" id="toc-matrices-with-one-multiple-index" class="nav-link" data-scroll-target="#matrices-with-one-multiple-index">Matrices with one multiple index</a></li>
  <li><a href="#arrays-of-vectors-or-matrices" id="toc-arrays-of-vectors-or-matrices" class="nav-link" data-sc