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<b>let </b><font color="Maroon">C</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">V</font> be   <a href="normsp_1.html#NM1">RealNormSpace</a>;<br/><b>let </b><font color="Maroon">f1</font> be   <a href="partfun1.html#NM1">PartFunc</a> of <font color="Maroon">C</font>,the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">V</font>;<br/><b>let </b><font color="Maroon">f2</font> be   <a href="partfun1.html#NM1">PartFunc</a> of <font color="Maroon">C</font>,the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">V</font>;<br/>







<b>thus </b><font color="Maroon">f1</font> <a href="vfunct_1.html#K2" target="_self">-</a> <span class="p1">(<span class="default"><a href="vfunct_1.html#K6" target="_self">-</a> <font color="Maroon">f2</font></span>)</span> = 
<font color="Maroon">f1</font> <a href="vfunct_1.html#K1" target="_self">+</a> <span class="p1">(<span class="default"><a href="vfunct_1.html#K6" target="_self">-</a> <span class="p2">(<span class="default"><a href="vfunct_1.html#K6" target="_self">-</a> <font color="Maroon">f2</font></span>)</span></span>)</span>
<b>by </b><i/>
<br/>.= 
<font color="Maroon">f1</font> <a href="vfunct_1.html#K1" target="_self">+</a> <font color="Maroon">f2</font>
<b>by </b><i/>
;<br/>


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