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<b>let </b><font color="Maroon">OTS</font> be   <a href="geomtrap.html#NM2">OrdTrapSpace</a>;<br/><b>let </b><font color="Maroon">a'</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="diraf.html#K2">Lambda</a> <font color="Maroon">OTS</font></span>)</span>;<br/><b>let </b><font color="Maroon">b'</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="diraf.html#K2">Lambda</a> <font color="Maroon">OTS</font></span>)</span>;<br/><b>let </b><font color="Maroon">c'</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="diraf.html#K2">Lambda</a> <font color="Maroon">OTS</font></span>)</span>;<br/><b>let </b><font color="Maroon">d'</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="diraf.html#K2">Lambda</a> <font color="Maroon">OTS</font></span>)</span>;<br/><b>let </b><font color="Maroon">d1'</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="diraf.html#K2">Lambda</a> <font color="Maroon">OTS</font></span>)</span>;<br/>











<b>assume </b><a NAME="E1:106"/><i><font color="Green">E45</font></i>: 
( <font color="Maroon">a'</font>,<font color="Maroon">b'</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c'</font>,<font color="Maroon">d'</font> &amp; <font color="Maroon">a'</font>,<font color="Maroon">b'</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c'</font>,<font color="Maroon">d1'</font> )
 ;<br/>

<b>assume </b><a NAME="E2:106"/><i><font color="Green">E46</font></i>: 
<font color="Maroon">a'</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Maroon">b'</font>
 ;<br/>

<b>reconsider </b><font color="Maroon">a</font> = <font color="Maroon">a'</font>, <font color="Maroon">b</font> = <font color="Maroon">b'</font>, <font color="Maroon">c</font> = <font color="Maroon">c'</font>, <font color="Maroon">d</font> = <font color="Maroon">d'</font>, <font color="Maroon">d1</font> = <font color="Maroon">d1'</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">OTS</font> <b>by </b><i/>;<br/>
<a NAME="E4:106"/>
( ( <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d</font> &amp; <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d1</font> ) or ( <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d</font> &amp; <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">d1</font>,<font color="Maroon">c</font> ) or ( <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">d</font>,<font color="Maroon">c</font> &amp; <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d1</font> ) or ( <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">d</font>,<font color="Maroon">c</font> &amp; <font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">d1</font>,<font color="Maroon">c</font> ) )
 
<b>by </b><i>, <a class="ref" href="geomtrap.html#D3" target="_self">Def3</a></i>;<br/>
<a NAME="E5:106"/><b>then </b>
( <font color="Maroon">d</font> <a href="hidden.html#R1">=</a> <font color="Maroon">d1</font> or <font color="Maroon">d1</font>,<font color="Maroon">c</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d</font> or <font color="Maroon">d</font>,<font color="Maroon">c</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d1</font> or ( <font color="Maroon">b</font>,<font color="Maroon">a</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d</font> &amp; <font color="Maroon">b</font>,<font color="Maroon">a</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">c</font>,<font color="Maroon">d1</font> ) )
 
<b>by </b><i>, </i>;<br/>
<a NAME="E6:106"/><b>then </b>
( <font color="Maroon">d</font> <a href="hidden.html#R1">=</a> <font color="Maroon">d1</font> or ( <font color="Maroon">c</font> <a href="hidden.html#R1">=</a> <font color="Maroon">d</font> &amp; <font color="Maroon">c</font> <a href="hidden.html#R1">=</a> <font color="Maroon">d1</font> ) )
 
<b>by </b><i>, </i>;<br/>
<b>hence </b><a NAME="E7:106"/>
<font color="Maroon">d'</font> <a href="hidden.html#R1">=</a> <font color="Maroon">d1'</font>
 ;<br/>


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