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<b>let </b><font color="Maroon">A</font> be   <a href="ordinal1.html#NM2">Ordinal</a>;<br/>

<b>thus </b><font color="Maroon">A</font> <a href="ordinal2.html#K10" target="_self">+^</a> 1 = 
 <a href="ordinal1.html#K1">succ</a> <span class="p1">(<span class="default"><font color="Maroon">A</font> <a href="ordinal2.html#K10" target="_self">+^</a> <a href="xboole_0.html#K1">{}</a> </span>)</span>
<b>by </b><i>, </i>
<br/>.= 
 <a href="ordinal1.html#K1">succ</a> <font color="Maroon">A</font>
<b>by </b><i/>
;<br/>


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