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<div><span class="kw">theorem </span><a NAME="T81"><span class="comment"><font color="firebrick">:: RFUNCT_3:81</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">D</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">F</font> being   <a href="partfun1.html#NM1" title="PARTFUN1:NM.1">PartFunc</a> of <font color="Olive" title="b1">D</font>,<a href="numbers.html#K1" title="NUMBERS:func.1">REAL</a> holds   <a href="rfunct_3.html#K21" title="RFUNCT_3:func.21">Sum</a> (<font color="Olive" title="b2">F</font>,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>) <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  <span class="kw">by</span> <span class="lab"><a class="ref" href="rfunct_3.html#T68" target="_self" onmouseover="rs('rfunct_3/T68')" onmouseout="rh()">Th68</a>, <a class="ref" href="rvsum_1.html#T72" onmouseover="rs('rvsum_1/T72')" onmouseout="rh()">RVSUM_1:72</a></span>;<br/></div></div>
