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<b>let </b><font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font> be   <a href="lattices.html#NM1">Lattice</a>;<br/>

<b>assume </b><a NAME="E1:53"/>
(  <a href="filter_1.html#K8" target="_self">LattRel</a> <font color="Maroon">c<sub>1</sub></font>, <a href="filter_1.html#K8" target="_self">LattRel</a> <font color="Maroon">c<sub>2</sub></font> <a href="wellord1.html#R4">are_isomorphic</a>  &amp;  <a href="filter_1.html#K8" target="_self">LattRel</a> <font color="Maroon">c<sub>2</sub></font>, <a href="filter_1.html#K8" target="_self">LattRel</a> <font color="Maroon">c<sub>3</sub></font> <a href="wellord1.html#R4">are_isomorphic</a>  )
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="filter_1.html#D9" target="_self">FILTER_1:def 9</a><br/>

<b>hence </b><a NAME="E2:53"/>
 <a href="filter_1.html#K8" target="_self">LattRel</a> <font color="Maroon">c<sub>1</sub></font>, <a href="filter_1.html#K8" target="_self">LattRel</a> <font color="Maroon">c<sub>3</sub></font> <a href="wellord1.html#R4">are_isomorphic</a> 
 <b>by </b><i><a class="ref" href="wellord1.html#T52">WELLORD1:52</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="filter_1.html#D9" target="_self">FILTER_1:def 9</a><br/>


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