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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E70">Th117</font></span>: <a NAME="T118"><span class="comment"><font color="firebrick">:: FUNCT_7:118</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">a</font>, <font color="Olive" title="b2">b</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds   <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">a</font> <a href="funct_7.html#K10" title="FUNCT_7:func.10">followed_by</a> <font color="Olive" title="b2">b</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a> </div></div>
