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<div><span class="kw">theorem </span><a NAME="T20"><span class="comment"><font color="firebrick">:: PCS_0:20</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">P</font>, <font color="Olive" title="b2">Q</font> being   <a href="pcs_0.html#NM1" title="PCS_0:NM.1">pcs</a>  st <font color="Olive" title="b1">P</font> <a href="tsep_1.html#R1" title="TSEP_1:pred.1">misses</a> <font color="Olive" title="b2">Q</font> holds <br/> <a href="pcs_0.html#K20" title="PCS_0:func.20">pcs-sum</a> (<font color="Olive" title="b1">P</font>,<font color="Olive" title="b2">Q</font>) is   <a href="pcs_0.html#NM1" title="PCS_0:NM.1">pcs</a></div></div>
