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<span class="kw">reconsider </span><font color="Maroon" title="c3">O1</font> = <span class="p1">(<span class="default"><a href="topdim_2.html#K1" title="TOPDIM_2:func.1">order</a> <font color="Maroon" title="c2">F</font></span>)</span> <a href="xxreal_3.html#K1" title="XXREAL_3:func.1">+</a> 1 as   <a href="ordinal1.html#V7" title="ORDINAL1:attr.7">natural</a>   <a href="ordinal1.html#NM1" title="ORDINAL1:NM.1">number</a>  ;<br/>
<a NAME="E2:4_2_1"/>
<span class="p1">(<span class="default"><a href="topdim_2.html#K1" title="TOPDIM_2:func.1">order</a> <font color="Maroon" title="c2">F</font></span>)</span> <a href="xxreal_3.html#K1" title="XXREAL_3:func.1">+</a> 1 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">O1</font> <a href="xxreal_3.html#K3" title="XXREAL_3:func.3">-</a> 1</span>)</span> <a href="xxreal_3.html#K1" title="XXREAL_3:func.1">+</a> 1
 
;<br/>
<span class="kw">hence </span><a NAME="E3:4_2_1"/>
 <a href="topdim_2.html#K1" title="TOPDIM_2:func.1">order</a> <font color="Maroon" title="c2">F</font> is  <a href="int_1.html#V1" title="INT_1:attr.1">integer</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="xxreal_3.html#T11" title="XXREAL_3:th.11">XXREAL_3:11</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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