<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon" title="c1">X</font> be   <a href="bcialg_1.html#NM1" title="BCIALG_1:NM.1">BCI-algebra</a>;<br/><b>let </b><font color="Maroon" title="c2">x</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ; <i><font color="Red">:: according to </font></i><a class="ref" href="tarski.html#D3" title="TARSKI:def.3">TARSKI:def 3</a><br/>



<b>assume </b><a NAME="E1:66"/>
<font color="Maroon" title="c2">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="bcialg_2.html#K4" title="BCIALG_2:func.4">ConSet</a> <font color="Maroon" title="c1">X</font>
 ;<br/>

<b>then consider </b><font color="Maroon" title="c3">R</font> being    <a href="bcialg_2.html#M1" title="BCIALG_2:mode.1">Congruence</a> of <font color="Maroon" title="c1">X</font><b> such that </b><br/><a NAME="E3:66"/><i><font color="Green" title="E34">A1</font></i>: 
<font color="Maroon" title="c2">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c3">R</font>
 ;<br/>
<a NAME="E4:66"/>
<font color="Maroon" title="c2">x</font> is    <a href="bcialg_2.html#M3" title="BCIALG_2:mode.3">R-congruence</a> of <font color="Maroon" title="c1">X</font>
 
<b>by </b><i><a class="txt" href="bcialg_2.html#E3:66"><i><font color="Green" title="E34">A1</font></i></a>, <a class="ref" href="bcialg_2.html#T36" target="_self" title="BCIALG_2:th.36">Th36</a></i>;<br/>
<b>hence </b><a NAME="E5:66"/>
<font color="Maroon" title="c2">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="bcialg_2.html#K6" title="BCIALG_2:func.6">RConSet</a> <font color="Maroon" title="c1">X</font>
 ;<br/>


</div>
