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<span class="kw">thus </span><a NAME="E1:50_1_1"/>
 <a href="struct_0.html#K2" title="STRUCT_0:func.2">[#]</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">T</font> <a href="pre_topc.html#K1" title="PRE_TOPC:func.1">|</a> <font color="Maroon" title="c2">X</font></span>)</span> is  <a href="xxreal_2.html#V6" title="XXREAL_2:attr.6">interval</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="pre_topc.html#D5" title="PRE_TOPC:def.5">PRE_TOPC:def 5</a></span>; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="topalg_2.html#D3" title="TOPALG_2:def.3">TOPALG_2:def 3</a> <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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