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<b>let </b><font color="Maroon">X</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="osalg_4.html#K2" target="_self">Components</a> <font color="Maroon">R</font>;<br/>

<b>consider </b><font color="Maroon">x</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E2:17_1_1"/><i><font color="Green">E33</font></i>: 
( <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">R</font> &amp; <font color="Maroon">X</font> <a href="hidden.html#R1">=</a>  <a href="eqrel_1.html#K7">Class</a> <span class="p1">(<span class="default"><a href="osalg_4.html#K1" target="_self">Path_Rel</a> <font color="Maroon">R</font></span>)</span>,<font color="Maroon">x</font> )
 <b>by </b><i><a class="ref" href="eqrel_1.html#D5">EQREL_1:def 5</a></i>;<br/>
<b>thus </b><a NAME="E3:17_1_1"/>
not <font color="Maroon">X</font> is <a href="xboole_0.html#V1">empty</a>
 <b>by </b><i>, <a class="ref" href="eqrel_1.html#T28">EQREL_1:28</a></i>;<br/>


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