pan class="arrow">&#45;&gt;</span></span> unit</span></code></div></div></details></div><div class="odoc-spec"><div class="spec value anchored" id="val-leq"><a href="#val-leq" class="anchor"></a><code><span><span class="keyword">val</span> leq : <span>lhs:<a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span>rhs:<a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div><div class="spec-doc"><p>the implication relation: <code>lhs &lt;= rhs</code> means <c