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<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="pre_topc.html#L1">TopStruct</a> ;<br/>

<b>assume </b><a NAME="E1:19_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="tdlat_3.html#V1" target="_self">discrete</a>
 ;<br/>

<a NAME="E2:19_1_1"/><b>then </b>
for <font color="Olive">b<sub>1</sub></font> being  <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>1</sub></font> st <font color="Olive">b<sub>1</sub></font> <a href="hidden.html#R2">in</a> the <a href="pre_topc.html#U1">topology</a> of <font color="Maroon">c<sub>1</sub></font> holds <br/>the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font> <a href="subset_1.html#K6">\</a> <font color="Olive">b<sub>1</sub></font> <a href="hidden.html#R2">in</a> the <a href="pre_topc.html#U1">topology</a> of <font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="tdlat_3.html#T14" target="_self">Th14</a></i>;<br/>
<b>hence </b><a NAME="E3:19_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="tdlat_3.html#V3" target="_self">almost_discrete</a>
 <b>by </b><i><a class="ref" href="tdlat_3.html#D3" target="_self">Def3</a></i>;<br/>


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