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<b>let </b><font color="Maroon">a</font> be   <a href="pre_topc.html#NM2">Point</a> of <font color="Maroon">T</font>;<br/>

<b>thus </b><a NAME="E1:54_1_1"/>
<font color="Maroon">a</font>,<font color="Maroon">a</font> <a href="borsuk_2.html#R2">are_connected</a> 
 ;<br/>


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