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<div><span class="kw">theorem </span><a NAME="T24"><span class="comment"><font color="firebrick">:: EUCLID12:24</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">A</font> being   <a href="pre_topc.html#NM2" title="PRE_TOPC:NM.2">Point</a> of <span class="p1">(<span class="default"><a href="euclid.html#K15" title="EUCLID:func.15">TOP-REAL</a> 2</span>)</span> holds   <a href="euclid12.html#K1" title="EUCLID12:func.1">half_length</a> (<font color="Olive" title="b1">A</font>,<font color="Olive" title="b1">A</font>) <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="ordinal1.html#K5" title="ORDINAL1:func.5">0</a> </div></div>
