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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E41">Th37</font></span>: <a NAME="T45"><span class="comment"><font color="firebrick">:: CARDFIL4:45</font></span><br/></a><div class="add"><span class="p1"><a href="cardfil4.html#K2" title="CARDFIL4:func.2">&lt;.</a><span class="default"><span class="p2">(<span class="default"><a href="card_fil.html#K4" title="CARD_FIL:func.4">Frechet_Filter</a> <a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a></span>)</span>,<span class="p2">(<span class="default"><a href="card_fil.html#K4" title="CARD_FIL:func.4">Frechet_Filter</a> <a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a></span>)</span></span><a href="cardfil4.html#K2" title="CARDFIL4:func.2">.)</a></span> <a href="cardfil2.html#R2" title="CARDFIL2:pred.2">is_filter-finer_than</a>  <a href="card_fil.html#K4" title="CARD_FIL:func.4">Frechet_Filter</a> <span class="p1"><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">[:</a><span class="default"><a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a>,<a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a></span><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">:]</a></span></div></div>
