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<a NAME="E1:46_1_1"/>
 <a href="subset_1.html#K1" title="SUBSET_1:func.1">{}</a> <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> is  <a href="measure6.html#NV1" title="MEASURE6:NV.1">without_zero</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="measure6.html#D2" title="MEASURE6:def.2">MEASURE6:def 2</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:46_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> st <br/>( <font color="Olive">b<sub>1</sub></font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  &amp; <font color="Olive">b<sub>1</sub></font> is  <a href="measure6.html#NV1" title="MEASURE6:NV.1">without_zero</a>  &amp; <font color="Olive">b<sub>1</sub></font> is  <a href="finset_1.html#V1" title="FINSET_1:attr.1">finite</a>  )
 ; <a class="txt" 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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