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<div><span class="kw">theorem </span><a NAME="T21"><span class="comment"><font color="firebrick">:: FINTOPO4:21</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="numbers.html#NK1" title="NUMBERS:NK.1">NAT</a>   st <font color="Olive" title="b1">n</font> <a href="xxreal_0.html#NR4" title="XXREAL_0:NR.4">&gt;</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  holds <br/> <a href="fintopo4.html#K4" title="FINTOPO4:func.4">FTSC1</a> <font color="Olive" title="b1">n</font> is  <a href="fin_topo.html#V1" title="FIN_TOPO:attr.1">symmetric</a> </div></div>
