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<b>let </b><font color="Maroon">A</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">f</font> be   <a href="funct_2.html#NM2">Permutation</a> of <font color="Maroon">A</font>;<br/><b>let </b><font color="Maroon">g</font> be   <a href="funct_2.html#NM2">Permutation</a> of <font color="Maroon">A</font>;<br/>





<b>thus </b><span class="p1">(<span class="default"><font color="Maroon">f</font> <a href="transgeo.html#K2" target="_self">\</a> <font color="Maroon">g</font></span>)</span> <a href="funct_2.html#K2">"</a>  = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">g</font> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="transgeo.html#K1" target="_self">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">g</font> <a href="transgeo.html#K1" target="_self">*</a> <font color="Maroon">f</font></span>)</span> <a href="funct_2.html#K2">"</a> </span>)</span>
<b>by </b><i><a class="ref" href="funct_1.html#T66">FUNCT_1:66</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">g</font> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="transgeo.html#K1" target="_self">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">f</font> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="transgeo.html#K1" target="_self">*</a> <span class="p2">(<span class="default"><font color="Maroon">g</font> <a href="funct_2.html#K2">"</a> </span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="funct_1.html#T66">FUNCT_1:66</a></i>
<br/>.= 
<font color="Maroon">g</font> <a href="transgeo.html#K1" target="_self">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">f</font> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="transgeo.html#K1" target="_self">*</a> <span class="p2">(<span class="default"><font color="Maroon">g</font> <a href="funct_2.html#K2">"</a> </span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="funct_1.html#T65">FUNCT_1:65</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">f</font> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="transgeo.html#K2" target="_self">\</a> <font color="Maroon">g</font>
<b>by </b><i><a class="ref" href="relat_1.html#T55">RELAT_1:55</a></i>
;<br/>


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