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<b>let </b><font color="Maroon" title="c1">SAS</font> be   <a href="semi_af1.html#NM1" title="SEMI_AF1:NM.1">Semi_Affine_Space</a>;<br/><b>let </b><font color="Maroon" title="c2">b</font>, <font color="Maroon" title="c3">a</font>, <font color="Maroon" title="c4">p</font>, <font color="Maroon" title="c5">q</font>, <font color="Maroon" title="c6">c</font>, <font color="Maroon" title="c7">r</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">SAS</font>;<br/>













<b>assume </b><a NAME="E1:74"/><i><font color="Green" title="E64">A1</font></i>: 
(  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c2">b</font>,<font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c5">q</font> &amp;  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c6">c</font>,<font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c7">r</font> )
 ;<br/>

<b>consider </b><font color="Maroon" title="c8">s</font> being   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">SAS</font><b> such that </b><br/><a NAME="E3:74"/><i><font color="Green" title="E65">A2</font></i>: 
 <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c5">q</font>,<font color="Maroon" title="c7">r</font>,<font color="Maroon" title="c8">s</font>
 <b>by </b><i><a class="ref" href="semi_af1.html#T82" target="_self" title="SEMI_AF1:th.82">Th82</a></i>;<br/>
<a NAME="E4:74"/>
(  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c5">q</font>,<font color="Maroon" title="c2">b</font>,<font color="Maroon" title="c3">a</font> &amp;  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c5">q</font>,<font color="Maroon" title="c7">r</font>,<font color="Maroon" title="c8">s</font> &amp;  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c7">r</font>,<font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c8">s</font>,<font color="Maroon" title="c5">q</font> &amp;  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c7">r</font>,<font color="Maroon" title="c4">p</font>,<font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c6">c</font> )
 
<b>by </b><i><a class="txt" href="semi_af1.html#E1:74"><i><font color="Green" title="E64">A1</font></i></a>, <a class="txt" href="semi_af1.html#E3:74"><i><font color="Green" title="E65">A2</font></i></a>, <a class="ref" href="semi_af1.html#T89" target="_self" title="SEMI_AF1:th.89">Th89</a></i>;<br/>
<a NAME="E5:74"/><b>then </b>
(  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c2">b</font>,<font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c7">r</font>,<font color="Maroon" title="c8">s</font> &amp;  <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c3">a</font>,<font color="Maroon" title="c6">c</font>,<font color="Maroon" title="c8">s</font>,<font color="Maroon" title="c5">q</font> )
 
<b>by </b><i><a class="ref" href="semi_af1.html#T85" target="_self" title="SEMI_AF1:th.85">Th85</a></i>;<br/>
<b>hence </b><a NAME="E6:74"/>
 <a href="semi_af1.html#R3" title="SEMI_AF1:pred.3">congr</a> <font color="Maroon" title="c2">b</font>,<font color="Maroon" title="c6">c</font>,<font color="Maroon" title="c7">r</font>,<font color="Maroon" title="c5">q</font>
 <b>by </b><i><a class="ref" href="semi_af1.html#T90" target="_self" title="SEMI_AF1:th.90">Th90</a></i>;<br/>


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