<code><span><span class="keyword">val</span> lq : <span><span class="optlabel">?thin</span>:bool <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-mat">mat</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-mat">mat</a> * <a href="#type-mat">mat</a></span></code></div></div><h6 id="linear-system-of-equations"><a href="#linear-system-of-equations" class="anchor"></a>Linear system of equations</h6><div class="odoc-spec"><div class="spec value anchored" id="val-linsolve"><a href="#va