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<a NAME="E1:47_1_1"/>
<font color="Maroon" title="c1">R</font> <a href="relat_1.html#K9" title="RELAT_1:func.9">.:</a> <font color="Maroon" title="c2">X</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="relat_1.html#NK4" title="RELAT_1:NK.4">rng</a> <font color="Maroon" title="c1">R</font>
 
<b>by </b><i><a class="ref" href="relat_1.html#T144" title="RELAT_1:th.144">RELAT_1:144</a></i>;<br/>
<b>hence </b><a NAME="E2:47_1_1"/>
<font color="Maroon" title="c1">R</font> <a href="relat_1.html#K9" title="RELAT_1:func.9">.:</a> <font color="Maroon" title="c2">X</font> is <a href="membered.html#V6" title="MEMBERED:attr.6">natural-membered</a>
 <b>by </b><i><a class="ref" href="membered.html#T24" title="MEMBERED:th.24">MEMBERED:24</a></i>;<br/>


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