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<b>let </b><font color="Maroon" title="c2">B</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a> <a href="altcat_2.html#NM2" title="ALTCAT_2:NM.2">subcategory</a> of <font color="Maroon" title="c1">A</font>;<br/>

<b>thus </b><a NAME="E1:61_1_1"/>
<font color="Maroon" title="c2">B</font> is <a href="yellow21.html#V2" title="YELLOW21:attr.2">lattice-wise</a>
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="yellow21.html#D5" target="_self" title="YELLOW21:def.5">YELLOW21:def 5</a><br/>

<b>let </b><font color="Maroon" title="c3">b</font> be   <a href="altcat_1.html#NM1" title="ALTCAT_1:NM.1">object</a> of <font color="Maroon" title="c2">B</font>;<br/>

<b>reconsider </b><font color="Maroon" title="c4">a</font> = <font color="Maroon" title="c3">b</font> as   <a href="altcat_1.html#NM1" title="ALTCAT_1:NM.1">object</a> of <font color="Maroon" title="c1">A</font> <b>by </b><i><a class="ref" href="altcat_2.html#T30" title="ALTCAT_2:th.30">ALTCAT_2:30</a></i>;<br/>
<a NAME="E3:61_1_1"/>
<font color="Maroon" title="c4">a</font> is  <a href="lattice3.html#V3" title="LATTICE3:attr.3">complete</a> <a href="waybel_0.html#NM8" title="WAYBEL_0:NM.8">LATTICE</a>
 
<b>by </b><i><a class="ref" href="yellow21.html#D5" target="_self" title="YELLOW21:def.5">Def5</a></i>;<br/>
<b>hence </b><a NAME="E4:61_1_1"/>
<font color="Maroon" title="c3">b</font> is  <a href="lattice3.html#V3" title="LATTICE3:attr.3">complete</a> <a href="waybel_0.html#NM8" title="WAYBEL_0:NM.8">LATTICE</a>
 ;<br/>


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