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<div><span class="kw">theorem </span><a NAME="T30"><span class="comment"><font color="firebrick">:: CLASSES1:30</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">A</font> being   <a href="ordinal1.html#NM3" title="ORDINAL1:NM.3">Ordinal</a> holds   <a href="classes1.html#K4" title="CLASSES1:func.4">Rank</a> <span class="p1">(<span class="default"><a href="ordinal1.html#K1" title="ORDINAL1:func.1">succ</a> <font color="Olive" title="b1">A</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="setfam_1.html#K9" title="SETFAM_1:func.9">bool</a> <span class="p1">(<span class="default"><a href="classes1.html#K4" title="CLASSES1:func.4">Rank</a> <font color="Olive" title="b1">A</font></span>)</span> <span class="kw">by</span> <span class="lab"><a class="txt" href="classes1.html#E36"><span class="lab"><font color="Green" title="E24">Lm2</font></span></a></span>;<br/></div></div>
