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<div><span class="kw">theorem </span><a NAME="T6"><span class="comment"><font color="firebrick">:: TOPGEN_2:6</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">T</font> being   non  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  <a href="pre_topc.html#NM1" title="PRE_TOPC:NM.1">TopSpace</a> holds <br/> ( <font color="Olive" title="b1">T</font> is  <a href="frechet.html#V1" title="FRECHET:attr.1">first-countable</a>  iff  <a href="topgen_2.html#K2" title="TOPGEN_2:func.2">Chi</a> <font color="Olive" title="b1">T</font> <a href="ordinal1.html#R1" title="ORDINAL1:pred.1">c=</a>  <a href="ordinal1.html#K4" title="ORDINAL1:func.4">omega</a>  )</div></div>
