d</a> * <a href="B/index.html#type-t">B.t</a></code></dt><dt class="spec value" id="val-(+$)"><a href="#val-(+$)" class="anchor"></a><code><span class="keyword">val</span> (+$) : <a href="index.html#type-real_bound">real_bound</a> <span>&#45;&gt;</span> <a href="index.html#type-real_bound">real_bound</a> <span>&#45;&gt;</span> <a href="index.html#type-kind">kind</a> * <a href="B/index.html#type-t">B.t</a></code></dt><dt class="spec value" id="val-(-@)"><a href="#val-(-@)" class="anchor"></a><code><span clas