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<b>let </b><font color="Maroon">D</font> be  non <a href="xboole_0.html#V1">empty</a> <a href="finset_1.html#V1">finite</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">C</font> be  non <a href="xboole_0.html#V1">empty</a> <a href="finset_1.html#V1">finite</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">F</font> be   <a href="partfun1.html#NM1">PartFunc</a> of <font color="Maroon">D</font>, <a href="numbers.html#K1">REAL</a> ;<br/><b>let </b><font color="Maroon">B</font> be   <a href="rearran1.html#NM1">RearrangmentGen</a> of <font color="Maroon">C</font>;<br/>







<b>assume </b><a NAME="E1:38"/>
( <font color="Maroon">F</font> is <a href="partfun1.html#V1">total</a> &amp;  <a href="card_1.html#K4">card</a> <font color="Maroon">C</font> <a href="hidden.html#R1">=</a>  <a href="card_1.html#K4">card</a> <font color="Maroon">D</font> )
 ;<br/>

<a NAME="E2:38"/><b>then </b>
 <a href="rfunct_3.html#K22">FinS</a> <span class="p1">(<span class="default"><a href="rearran1.html#K4" target="_self">Rlor</a> <font color="Maroon">F</font>,<font color="Maroon">B</font></span>)</span>,<font color="Maroon">C</font> <a href="hidden.html#R1">=</a>  <a href="rfunct_3.html#K22">FinS</a> <font color="Maroon">F</font>,<font color="Maroon">D</font>
 
<b>by </b><i/>;<br/>
<b>hence </b> <a href="rfunct_3.html#K24">Sum</a> <span class="p1">(<span class="default"><a href="rearran1.html#K4" target="_self">Rlor</a> <font color="Maroon">F</font>,<font color="Maroon">B</font></span>)</span>,<font color="Maroon">C</font> = 
 <a href="rvsum_1.html#K15">Sum</a> <span class="p1">(<span class="default"><a href="rfunct_3.html#K22">FinS</a> <font color="Maroon">F</font>,<font color="Maroon">D</font></span>)</span>
<b>by </b><i><a class="ref" href="rfunct_3.html#D15">RFUNCT_3:def 15</a></i>
<br/>.= 
 <a href="rfunct_3.html#K24">Sum</a> <font color="Maroon">F</font>,<font color="Maroon">D</font>
<b>by </b><i><a class="ref" href="rfunct_3.html#D15">RFUNCT_3:def 15</a></i>
;<br/><br/>


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