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<a NAME="E1:23_1_1"/>
for <font color="Olive">x</font> being  <a href="struct_0.html#NM1">Element</a> of <a href="topmetr.html#K3">R^1</a>  holds  <font color="Olive">x</font> is <a href="xreal_0.html#V1">real</a>
 
<b>by </b><i><a class="ref" href="topmetr.html#T24">TOPMETR:24</a>, <a class="ref" href="xreal_0.html#D1">XREAL_0:def 1</a></i>;<br/>
<b>hence </b><a NAME="E2:23_1_1"/>
 <a href="topmetr.html#K3">R^1</a>  is <a href="borsuk_6.html#V1" target="_self">real-membered</a>
 <b>by </b><i/>;<br/>


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