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<b>let </b><font color="Maroon">c1</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><font color="Maroon">L</font> <a href="filter_1.html#K4" target="_self">/\/</a> <font color="Maroon">F</font></span>)</span>, <font color="Maroon">c2</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><font color="Maroon">L</font> <a href="filter_1.html#K4" target="_self">/\/</a> <font color="Maroon">F</font></span>)</span>;<br/>

<b>assume </b><b>that </b><br/><a NAME="E1:24_1_2"/><i><font color="Green">E69</font></i>: 
for <font color="Olive">R</font> being  <a href="eqrel_1.html#NM2">Equivalence_Relation</a> of the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>  st <font color="Olive">R</font> <a href="hidden.html#R1">=</a>  <a href="filter_0.html#K10">equivalence_wrt</a> <font color="Maroon">F</font> holds <br/><font color="Maroon">c1</font> <a href="hidden.html#R1">=</a>  <a href="eqrel_1.html#K7">Class</a> <font color="Olive">R</font>,<font color="Maroon">a</font>
 <b>and </b><br/><a NAME="E2:24_1_2"/><i><font color="Green">E76</font></i>: 
for <font color="Olive">R</font> being  <a href="eqrel_1.html#NM2">Equivalence_Relation</a> of the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>  st <font color="Olive">R</font> <a href="hidden.html#R1">=</a>  <a href="filter_0.html#K10">equivalence_wrt</a> <font color="Maroon">F</font> holds <br/><font color="Maroon">c2</font> <a href="hidden.html#R1">=</a>  <a href="eqrel_1.html#K7">Class</a> <font color="Olive">R</font>,<font color="Maroon">a</font>
 ;<br/>

<b>reconsider </b><font color="Maroon">I</font> = <font color="Maroon">L</font> as   <a href="filter_0.html#NM2">I_Lattice</a> <b>by </b><i/>;<br/>
<b>reconsider </b><font color="Maroon">FI</font> = <font color="Maroon">F</font> as    <a href="filter_0.html#M1">Filter</a> of <font color="Maroon">I</font> ;<br/>
<a NAME="E5:24_1_2"/>
<font color="Maroon">c1</font> <a href="hidden.html#R1">=</a>  <a href="eqrel_1.html#K7">Class</a> <span class="p1">(<span class="default"><a href="filter_0.html#K11">equivalence_wrt</a> <font color="Maroon">FI</font></span>)</span>,<font color="Maroon">a</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E6:24_1_2"/>
<font color="Maroon">c1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">c2</font>
 <b>by </b><i/>;<br/>


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