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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  non <a href="struct_0.html#V3">empty</a> <a href="tdlat_3.html#V1">discrete</a> <a href="pre_topc.html#NM1">TopSpace</a>;<br/>

<a NAME="E1:19"/>
( <font color="Maroon">c<sub>1</sub></font> is <a href="topgen_1.html#V7">separable</a> iff  <a href="card_1.html#K1">Card</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="card_1.html#NR1" target="_self">&lt;=`</a>  <a href="card_1.html#K3">alef</a> 0 )
 
<b>by </b><i><a class="ref" href="topgen_4.html#T10" target="_self">Th10</a></i>;<br/>
<b>hence </b><a NAME="E2:19"/>
( <font color="Maroon">c<sub>1</sub></font> is <a href="topgen_1.html#V7">separable</a> iff <font color="Maroon">c<sub>1</sub></font> is <a href="orders_4.html#V1">countable</a> )
 <b>by </b><i><a class="ref" href="topgen_1.html#T3">TOPGEN_1:3</a></i>;<br/>


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