roll-target="#arrays-of-vectors-or-matrices">Arrays of vectors or matrices</a></li>
  <li><a href="#block-row-and-column-extraction-for-matrices" id="toc-block-row-and-column-extraction-for-matrices" class="nav-link" data-scroll-target="#block-row-and-column-extraction-for-matrices">Block, row, and column extraction for matrices</a></li>
  </ul></li>
  <li><a href="#matrices-with-parameters-and-constants" id="toc-matrices-with-parameters-and-constants" class="nav-link" data-scroll-target="#matrices-with-par