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<span class="kw">let </span><font color="Maroon" title="c1">n</font> be    <a href="ordinal1.html#NM1" title="ORDINAL1:NM.1">number</a> ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> ( <font color="Maroon" title="c1">n</font> is  <a href="ordinal1.html#V7" title="ORDINAL1:attr.7">natural</a>  implies <font color="Maroon" title="c1">n</font> is  <a href="card_1.html#V1" title="CARD_1:attr.1">cardinal</a>  )</span><br/>

<span class="kw">assume </span><a NAME="E1:77_1_1"/>
<font color="Maroon" title="c1">n</font> is  <a href="ordinal1.html#V7" title="ORDINAL1:attr.7">natural</a> 
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c1">n</font> is  <a href="card_1.html#V1" title="CARD_1:attr.1">cardinal</a> </span><br/>

<a NAME="E2:77_1_1"/><span class="kw">then </span>
<font color="Maroon" title="c1">n</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="ordinal1.html#K5" title="ORDINAL1:func.5">omega</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="ordinal1.html#D13" title="ORDINAL1:def.13">ORDINAL1:def 13</a></span>;<br/>
<span class="kw">hence </span><a NAME="E3:77_1_1"/>
<font color="Maroon" title="c1">n</font> is  <a href="card_1.html#V1" title="CARD_1:attr.1">cardinal</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="card_1.html#T65" target="_self" title="CARD_1:th.65">Th65</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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