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<b>let </b><font color="Maroon">PS</font> be   <a href="parsp_1.html#NM2">ParSp</a>;<br/>

<b>assume </b><a NAME="E1:59"/><i><font color="Green">E24</font></i>: 
for <font color="Olive">a</font>, <font color="Olive">b</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">PS</font> holds  <font color="Olive">a</font> <a href="hidden.html#R1">=</a> <font color="Olive">b</font>
 ;<br/>

<b>let </b><font color="Maroon">p</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">PS</font>;<br/><b>let </b><font color="Maroon">q</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">PS</font>;<br/><b>let </b><font color="Maroon">r</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">PS</font>;<br/><b>let </b><font color="Maroon">s</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">PS</font>;<br/>







<a NAME="E2:59"/>
<font color="Maroon">r</font> <a href="hidden.html#R1">=</a> <font color="Maroon">s</font>
 
<b>by </b><i><a class="ref" href="parsp_1.html#D5" target="_self">Def5</a></i>;<br/>
<b>hence </b><a NAME="E3:59"/>
<font color="Maroon">p</font>,<font color="Maroon">q</font> <a href="parsp_1.html#R1" target="_self">'||'</a> <font color="Maroon">r</font>,<font color="Maroon">s</font>
 <b>by </b><i><a class="txt" href="parsp_1.html#E14"><i><font color="Green">Lemma34</font></i></a></i>;<br/>


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