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<b>let </b><font color="Maroon">OAS</font> be   <a href="analoaf.html#NM1">OAffinSpace</a>;<br/><b>let </b><font color="Maroon">f</font> be   <a href="funct_2.html#NM2">Permutation</a> of the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">OAS</font>;<br/>



<b>assume </b><a NAME="E1:71"/><i><font color="Green">E22</font></i>: 
<font color="Maroon">f</font> <a href="transgeo.html#NR7" target="_self">is_Tr</a> 
 ;<br/>

<a NAME="E2:71"/><b>then </b>
<font color="Maroon">f</font> <a href="transgeo.html#NR6" target="_self">is_Dil</a> 
 
<b>by </b><i/>;<br/>
<a NAME="E3:71"/><b>then </b><i><font color="Green">E25</font></i>: 
<font color="Maroon">f</font> <a href="funct_2.html#K2">"</a>  <a href="transgeo.html#NR6" target="_self">is_Dil</a> 
 
<b>by </b><i/>;<br/>
<a NAME="E4:71"/><i><font color="Green">E26</font></i>: 
( <font color="Maroon">f</font> <a href="funct_2.html#R2">=</a>  <a href="partfun1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">OAS</font> implies <font color="Maroon">f</font> <a href="funct_2.html#K2">"</a>  <a href="funct_2.html#R2">=</a>  <a href="partfun1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">OAS</font> )
 
<b>by </b><i><a class="ref" href="funct_1.html#T67">FUNCT_1:67</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="71_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:71_1"/><i><font color="Green">E28</font></i>: 
for <font color="Olive">x</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">OAS</font>  holds <font color="Maroon">f</font> <a href="funct_2.html#K3">.</a> <font color="Olive">x</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Olive">x</font>
 ;<br/><b>given </b><font color="Maroon">y</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">OAS</font><b> such that </b><a NAME="E2:71_1"/><i><font color="Green">E30</font></i>: 
<span class="p1">(<span class="default"><font color="Maroon">f</font> <a href="funct_2.html#K2">"</a> </span>)</span> <a href="funct_2.html#K3">.</a> <font color="Maroon">y</font> <a href="hidden.html#R1">=</a> <font color="Maroon">y</font>
 ;<br/><a NAME="E3:71_1"/>
<font color="Maroon">f</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">y</font> <a href="hidden.html#R1">=</a> <font color="Maroon">y</font>
 <b>by </b><i><a class="ref" href="transgeo.html#T28" target="_self">Th28</a>, </i>;<br/><b>hence </b><a NAME="E4:71_1"/>
contradiction
 <b>by </b><i><a class="ref" href="transgeo.html#D3" target="_self">Def3</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E6:71"/>
<font color="Maroon">f</font> <a href="funct_2.html#K2">"</a>  <a href="transgeo.html#NR7" target="_self">is_Tr</a> 
 <b>by </b><i><a class="ref" href="transgeo.html#T23" target="_self">Th23</a>, <a class="ref" href="transgeo.html#T24" target="_self">Th24</a>, <a class="ref" href="transgeo.html#T26" target="_self">Th26</a>, </i>;<br/>


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