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<b>let </b><font color="Maroon">e</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="int_3.html#K1" target="_self">INT.Ring</a> , <font color="Maroon">h</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="int_3.html#K1" target="_self">INT.Ring</a> ;<br/>

<b>assume </b><a NAME="E1:8"/><i><font color="Green">E19</font></i>: 
<font color="Maroon">e</font> <a href="hidden.html#R1">=</a> 1
 ;<br/>

<b>reconsider </b><font color="Maroon">a</font> = <font color="Maroon">h</font>, <font color="Maroon">b</font> = <font color="Maroon">e</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K4">INT</a>  ;<br/>
<b>thus </b><font color="Maroon">h</font> <a href="group_1.html#K1">*</a> <font color="Maroon">e</font> = 
<font color="Maroon">a</font> <a href="xcmplx_0.html#K3">*</a> 1
<b>by </b><i>, </i>
<br/>.= 
<font color="Maroon">h</font>

;<br/>

<b>thus </b><font color="Maroon">e</font> <a href="group_1.html#K1">*</a> <font color="Maroon">h</font> = 
1 <a href="xcmplx_0.html#K3">*</a> <font color="Maroon">a</font>
<b>by </b><i>, </i>
<br/>.= 
<font color="Maroon">h</font>

;<br/>


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