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<div><span class="kw">theorem </span><a NAME="T40"><span class="comment"><font color="firebrick">:: ABCMIZ_A:40</font></span><br/></a><div class="add"> <a href="msualg_1.html#K1" title="MSUALG_1:func.1">the_arity_of</a> <span class="p1">(<span class="default"><a href="abcmiz_a.html#K15" title="ABCMIZ_A:func.15">@</a> <a href="abcmiz_a.html#K8" title="ABCMIZ_A:func.8">set-constr</a></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <span class="kw">by</span> <span class="lab"><a class="ref" href="abcmiz_a.html#D13" target="_self" onmouseover="rs('abcmiz_a/D13')" onmouseout="rh()">Def13</a></span>;<br/></div></div>
