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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E4">Th4</font></span>: <a NAME="T4"><span class="comment"><font color="firebrick">:: YELLOW_8:4</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font>, <font color="Olive" title="b2">Y</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>   st <font color="Olive" title="b1">X</font>,<font color="Olive" title="b2">Y</font> <a href="tarski.html#R3" title="TARSKI:pred.3">are_equipotent</a>  &amp; <font color="Olive" title="b1">X</font> is  <a href="card_3.html#V4" title="CARD_3:attr.4">countable</a>  holds <br/><font color="Olive" title="b2">Y</font> is  <a href="card_3.html#V4" title="CARD_3:attr.4">countable</a> </div></div>
