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<b>consider </b><font color="Maroon">c<sub>1</sub></font> being  non <a href="struct_0.html#V3">empty</a> <a href="pre_topc.html#V1">strict</a> <a href="tdlat_3.html#V1" target="_self">discrete</a> <a href="tdlat_3.html#V2" target="_self">anti-discrete</a>  <a href="pre_topc.html#L1">TopStruct</a> ;<br/>
<b>reconsider </b><font color="Maroon">c<sub>2</sub></font> = <font color="Maroon">c<sub>1</sub></font> as   <a href="pre_topc.html#NM1">TopSpace</a> ;<br/>
<b>take </b>
<font color="Maroon">c<sub>2</sub></font>
;<br/>

<b>thus </b><a NAME="E3:21_1_1"/>
( <font color="Maroon">c<sub>2</sub></font> is <a href="tdlat_3.html#V1" target="_self">discrete</a> &amp; <font color="Maroon">c<sub>2</sub></font> is <a href="tdlat_3.html#V2" target="_self">anti-discrete</a> &amp; <font color="Maroon">c<sub>2</sub></font> is <a href="pre_topc.html#V1">strict</a> &amp; not <font color="Maroon">c<sub>2</sub></font> is <a href="struct_0.html#V3">empty</a> )
 ;<br/>


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