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<b>consider </b><font color="Maroon">O</font> being  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> , <font color="Maroon">A</font> being  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/>
<b>consider </b><font color="Maroon">I</font> being    <a href="relset_1.html#M2">Relation</a> of <font color="Maroon">O</font>,<font color="Maroon">A</font>;<br/>
<a NAME="E3:6_1_1"/>
not  <a href="conlat_1.html#G2" target="_self">ContextStr</a>(# <font color="Maroon">O</font>,<font color="Maroon">A</font>,<font color="Maroon">I</font> #) is <a href="conlat_1.html#V2" target="_self">empty</a>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E4:6_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being   <a href="conlat_1.html#L2" target="_self">ContextStr</a>  st <br/>( <font color="Olive">b<sub>1</sub></font> is <a href="conlat_1.html#V4" target="_self">strict</a> &amp; not <font color="Olive">b<sub>1</sub></font> is <a href="conlat_1.html#V2" target="_self">empty</a> )
 ;<br/>


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