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<a NAME="E1:47_1_1"/>
 <a href="pre_topc.html#K1">{}</a> <font color="Maroon">c<sub>1</sub></font> is <a href="tops_1.html#V6">open_condensed</a>
 
<b>by </b><i><a class="ref" href="tdlat_1.html#T20" target="_self">Th20</a></i>;<br/>
<a NAME="E2:47_1_1"/><b>then </b>
 <a href="pre_topc.html#K1">{}</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R2">in</a> <span class="p1">{<span class="default"> <font color="Olive">b<sub>1</sub></font> where B is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>1</sub></font> : <font color="Olive">b<sub>1</sub></font> is <a href="tops_1.html#V6">open_condensed</a> </span>}</span> 
 
;<br/>
<b>hence </b><a NAME="E3:47_1_1"/>
not  <a href="tdlat_1.html#K9" target="_self">Open_Domains_of</a> <font color="Maroon">c<sub>1</sub></font> is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


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