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<a NAME="E1:20_1_1"/>
 <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  is   <a href="ordinal1.html#NM5" title="ORDINAL1:NM.5">Sequence</a> of <font color="Maroon" title="c1">D</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="ordinal1.html#T30" onmouseover="rs('ordinal1/T30')" onmouseout="rh()">ORDINAL1:30</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:20_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being   <a href="ordinal1.html#NM5" title="ORDINAL1:NM.5">Sequence</a> of <font color="Maroon" title="c1">D</font> st <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" 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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