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<b>let </b><font color="Maroon" title="c1">n</font>, <font color="Maroon" title="c2">m</font> be  <a href="ordinal1.html#V7" title="ORDINAL1:attr.7">natural</a> <a href="ordinal1.html#NM2" title="ORDINAL1:NM.2">Ordinal</a>;<br/>



<b>assume </b><a NAME="E1:25"/><i><font color="Green" title="E18">A1</font></i>: 
 <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c2">m</font>
 ;<br/>

<b>given </b><font color="Maroon" title="c3">a</font> being   <a href="ordinal1.html#NM2" title="ORDINAL1:NM.2">Ordinal</a><b> such that </b><a NAME="E3:25"/><i><font color="Green" title="E19">A2</font></i>: 
<font color="Maroon" title="c2">m</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">n</font> <a href="ordinal2.html#K11" title="ORDINAL2:func.11">*^</a> <font color="Maroon" title="c3">a</font>
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="arytm_3.html#D3" target="_self" title="ARYTM_3:def.3">ARYTM_3:def 3</a><br/>

<a NAME="E4:25"/>
<font color="Maroon" title="c3">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 
<b>by </b><i><a class="txt" href="arytm_3.html#E1:25"><i><font color="Green" title="E18">A1</font></i></a>, <a class="txt" href="arytm_3.html#E3:25"><i><font color="Green" title="E19">A2</font></i></a>, <a class="ref" href="ordinal2.html#T55" title="ORDINAL2:th.55">ORDINAL2:55</a></i>;<br/>
<b>hence </b><a NAME="E5:25"/>
<font color="Maroon" title="c1">n</font> <a href="ordinal1.html#R1" title="ORDINAL1:pred.1">c=</a> <font color="Maroon" title="c2">m</font>
 <b>by </b><i><a class="txt" href="arytm_3.html#E3:25"><i><font color="Green" title="E19">A2</font></i></a>, <a class="ref" href="ordinal3.html#T39" title="ORDINAL3:th.39">ORDINAL3:39</a></i>;<br/>


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