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<a NAME="E1:34_1_1"/>
<span class="p1"><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">[:</a><span class="default"><span class="p2"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span>,<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> is  <a href="card_3.html#V4" title="CARD_3:attr.4">countable</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="card_4.html#T7" onmouseover="rs('card_4/T7')" onmouseout="rh()">CARD_4:7</a></span>;<br/>
<a NAME="E2:34_1_1"/><span class="kw">then </span>
<a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <span class="p1"><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">[:</a><span class="default"><span class="p2"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span>,<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> is  <a href="card_3.html#V4" title="CARD_3:attr.4">countable</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="card_2.html#T85" onmouseover="rs('card_2/T85')" onmouseout="rh()">CARD_2:85</a></span>;<br/>
<span class="kw">hence </span><a NAME="E3:34_1_1"/>
 <a href="numbers.html#K4" title="NUMBERS:func.4">INT</a>  is  <a href="card_3.html#V5" title="CARD_3:attr.5">denumerable</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="numbers.html#D4" onmouseover="rs('numbers/D4')" onmouseout="rh()">NUMBERS:def 4</a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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