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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E100">Th90</font></span>: <a NAME="T90"><span class="comment"><font color="firebrick">:: INTPRO_1:90</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="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <a href="intpro_1.html#K1" title="INTPRO_1:func.1">MC-wff</a>  st <font color="Olive" title="b1">X</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Olive" title="b2">Y</font> holds <br/> <a href="intpro_1.html#K13" title="INTPRO_1:func.13">CnS4</a> <font color="Olive" title="b1">X</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="intpro_1.html#K13" title="INTPRO_1:func.13">CnS4</a> <font color="Olive" title="b2">Y</font></div></div>
