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<div><span class="kw">theorem </span><a NAME="T18"><span class="comment"><font color="firebrick">:: LTLAXIO3:18</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font> being   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <a href="ltlaxio1.html#NK1" title="LTLAXIO1:NK.1">LTLB_WFF</a>  st <font color="Olive" title="b1">X</font> is  <a href="ltlaxio3.html#V1" title="LTLAXIO3:attr.1">without_implication</a>  holds <br/> <a href="ltlaxio3.html#K5" title="LTLAXIO3:func.5">tau</a> <font color="Olive" title="b1">X</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">X</font></div></div>
