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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E12">Th7</font></span>: <a NAME="T7"><span class="comment"><font color="firebrick">:: CGAMES_1:7</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds <br/> ( <font color="Olive" title="b1">x</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="cgames_1.html#K6" title="CGAMES_1:func.6">the_LeftOptions_of</a> <a href="cgames_1.html#K4" title="CGAMES_1:func.4">ConwayOne</a> iff <font color="Olive" title="b1">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cgames_1.html#K3" title="CGAMES_1:func.3">ConwayZero</a>  )</div></div>
