pboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<p>Here, the first array dimension is reduced, leaving a single array dimension, and the row index of the matrix is reduced, leaving a row vector. For indexing, the values are given by <code>c[i, j] == a[i + 3, 3, 1, j + 1]</code></p>
</section>
<section id="block-row-and-column-extraction-for-matrices" class="level3 unnumbered">
<h3 class="unnumbered anchored" data-anchor-id="block-row-and-column-extraction-for-matrices">Block, row, a