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<div><span class="kw">theorem </span><a NAME="T59"><span class="comment"><font color="firebrick">:: TOPGEN_5:59</font></span><br/></a><div class="add"> <a href="topgen_3.html#K2" title="TOPGEN_3:func.2">Sorgenfrey-line</a>  is  <a href="topgen_5.html#V1" title="TOPGEN_5:attr.1">Tychonoff</a> </div></div>
