b_infty" class="anchor"></a><code><span><span class="keyword">val</span> is_lb_infty : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-is_nat"><a href="#val-is_nat" class="anchor"></a><code><span><span class="keyword">val</span> is_nat : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value anch