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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E2">NV</font></span>: <a NAME="T2"><span class="comment"><font color="firebrick">:: FINSEQ_9:2</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">f</font> being   <a href="relat_1.html#NM1" title="RELAT_1:NM.1">Relation</a> holds <br/> (  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">rng</a> <font color="Olive" title="b1">f</font> is  <a href="membered.html#V6" title="MEMBERED:attr.6">natural-membered</a>  iff <font color="Olive" title="b1">f</font> is  <a href="valued_0.html#V4" title="VALUED_0:attr.4">natural-valued</a>  )</div></div>
