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<div><span class="kw">theorem </span><a NAME="T58"><span class="comment"><font color="firebrick">:: TOPREALC:58</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font>, <font color="Olive" title="b2">m</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>  st <font color="Olive" title="b1">n</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="finseq_1.html#K2" title="FINSEQ_1:func.2">Seg</a> <font color="Olive" title="b2">m</font> holds <br/> <a href="toprealc.html#K16" title="TOPREALC:func.16">PROJ</a> (<font color="Olive" title="b2">m</font>,<font color="Olive" title="b1">n</font>) is  <a href="t_0topsp.html#V1" title="T_0TOPSP:attr.1">open</a> </div></div>
