_ident.html">start_ident</a></code> Get list of identity matrices.</p>
<p><code><a href="start_resids.html">start_resids</a></code> Sample covariance matrices for each mode.</p>
<p><code><a href="tsum.html">tsum</a></code> Tucker sum.</p>
<p><code><a href="tr.html">tr</a></code> Trace of a matrix.</p>
<p><code><a href="trim.html">trim</a></code> Truncates small numbers to 0.</p>
    </div>
    <div id="references">
    <h2>References</h2>
    <p>Gerard, D., &amp; Hoff, P. (2016). A higher-order LQ
    decom