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<a NAME="E1:81"/>
 <a href="card_1.html#K1">Card</a> <a href="qc_lang1.html#K2">bound_QC-variables</a>  <a href="hidden.html#R1">=</a>  <a href="card_1.html#K1">Card</a> <span class="p1"><a href="mcart_1.html#K12">[:</a><span class="default"><a href="numbers.html#K5">NAT</a> ,<span class="p2"><a href="domain_1.html#K6">{</a><span class="default">4</span><a href="domain_1.html#K6">}</a></span></span><a href="mcart_1.html#K12">:]</a></span>
 
<b>by </b><i><a class="ref" href="card_2.html#T11">CARD_2:11</a>, <a class="ref" href="qc_lang1.html#D2">QC_LANG1:def 2</a></i>;<br/>
<a NAME="E2:81"/><b>then </b>
 <a href="card_1.html#K1">Card</a> <a href="qc_lang1.html#K2">bound_QC-variables</a>  <a href="hidden.html#R1">=</a>  <a href="card_1.html#K3">alef</a> 0
 
<b>by </b><i><a class="ref" href="card_1.html#T38">CARD_1:38</a>, <a class="ref" href="card_4.html#T15">CARD_4:15</a>, <a class="ref" href="card_4.html#T81">CARD_4:81</a></i>;<br/>
<b>hence </b><a NAME="E3:81"/>
(  <a href="card_1.html#K1">Card</a> <a href="qc_lang1.html#K2">bound_QC-variables</a>  <a href="hidden.html#R1">=</a>  <a href="card_1.html#K3">alef</a> 0 &amp; not  <a href="qc_lang1.html#K2">bound_QC-variables</a>  is <a href="finset_1.html#V1">finite</a> )
 <b>by </b><i><a class="ref" href="card_4.html#T1">CARD_4:1</a></i>;<br/>


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