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<b>let </b><font color="Maroon" title="c1">OAS</font> be   <a href="analoaf.html#NM1" title="ANALOAF:NM.1">OAffinSpace</a>;<br/><b>let </b><font color="Maroon" title="c2">f</font> be   <a href="funct_2.html#NM2" title="FUNCT_2:NM.2">Permutation</a> of the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">OAS</font>;<br/>



<b>assume </b><a NAME="E1:78"/><i><font color="Green" title="E48">A1</font></i>: 
<font color="Maroon" title="c2">f</font> <a href="transgeo.html#NR7" title="TRANSGEO:NR.7">is_Tr</a> 
 ;<br/>

<a NAME="E2:78"/><i><font color="Green" title="E49">A2</font></i>: 
( <font color="Maroon" title="c2">f</font> <a href="funct_2.html#R2" title="FUNCT_2:pred.2">=</a>  <a href="partfun1.html#K6" title="PARTFUN1:func.6">id</a> the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">OAS</font> implies <font color="Maroon" title="c2">f</font> <a href="transgeo.html#NR4" title="TRANSGEO:NR.4">is_CDil</a>  )
 
<b>by </b><i><a class="ref" href="transgeo.html#T44" target="_self" title="TRANSGEO:th.44">Th44</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="78_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:78_1"/><i><font color="Green" title="E50">A3</font></i>: 
for <font color="Olive" title="b1">x</font> being  <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">OAS</font>  holds <font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Olive" title="b1">x</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Olive" title="b1">x</font>
 ;<br/><a NAME="E2:78_1"/>
for <font color="Olive" title="b1">a</font>, <font color="Olive" title="b2">b</font> being  <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">OAS</font> holds  <font color="Olive" title="b1">a</font>,<font color="Olive" title="b2">b</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Olive" title="b1">a</font>,<font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Olive" title="b2">b</font>
 <div><a class="txt" onclick="hs2(this)" href="javascript:()" title="78_1_1"><b>proof </b></a><div class="add">

<b>let </b><font color="Maroon" title="c3">a</font>, <font color="Maroon" title="c4">b</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">OAS</font>;<br/>



<a NAME="E1:78_1_1"/><i><font color="Green" title="E51">A4</font></i>: 
<font color="Maroon" title="c3">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c3">a</font>
 
<b>by </b><i><a class="txt" href="transgeo.html#E1:78_1"><i><font color="Green" title="E50">A3</font></i></a></i>;<br/>
<a NAME="E2:78_1_1"/>
( not  <a href="diraf.html#R3" title="DIRAF:pred.3">LIN</a> <font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c4">b</font> implies <font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c4">b</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c4">b</font> )
 
<b>by </b><i><a class="txt" href="transgeo.html#E1:78"><i><font color="Green" title="E48">A1</font></i></a>, <a class="txt" href="transgeo.html#E86"><i><font color="Green" title="E42">Lm5</font></i></a></i>;<br/>
<b>hence </b><a NAME="E3:78_1_1"/>
<font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c4">b</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c2">f</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c4">b</font>
 <b>by </b><i><a class="txt" href="transgeo.html#E1:78"><i><font color="Green" title="E48">A1</font></i></a>, <a class="txt" href="transgeo.html#E1:78_1_1"><i><font color="Green" title="E51">A4</font></i></a>, <a class="txt" href="transgeo.html#E90"><i><font color="Green" title="E46">Lm9</font></i></a></i>;<br/>


</div><b>end;</b></div><b>hence </b><a NAME="E3:78_1"/>
<font color="Maroon" title="c2">f</font> <a href="transgeo.html#NR4" title="TRANSGEO:NR.4">is_CDil</a> 
 <b>by </b><i><a class="ref" href="transgeo.html#T42" target="_self" title="TRANSGEO:th.42">Th42</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E4:78"/>
<font color="Maroon" title="c2">f</font> <a href="transgeo.html#NR4" title="TRANSGEO:NR.4">is_CDil</a> 
 <b>by </b><i><a class="txt" href="transgeo.html#E1:78"><i><font color="Green" title="E48">A1</font></i></a>, <a class="txt" href="transgeo.html#E2:78"><i><font color="Green" title="E49">A2</font></i></a>, <a class="ref" href="transgeo.html#D9" target="_self" title="TRANSGEO:def.9">Def9</a></i>;<br/>


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