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<b>let </b><font color="Maroon" title="c1">X</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a> <a href="pre_topc.html#NM1" title="PRE_TOPC:NM.1">TopSpace</a>;<br/><b>let </b><font color="Maroon" title="c2">X1</font>, <font color="Maroon" title="c3">X2</font>, <font color="Maroon" title="c4">Y1</font>, <font color="Maroon" title="c5">Y2</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  <a href="pre_topc.html#M1" title="PRE_TOPC:mode.1">SubSpace</a> of <font color="Maroon" title="c1">X</font>;<br/>



<b>assume </b><a NAME="E1:40"/><i><font color="Green" title="E29">A1</font></i>: 
( <font color="Maroon" title="c2">X1</font>,<font color="Maroon" title="c4">Y1</font> <a href="tsep_2.html#R4" title="TSEP_2:pred.4">constitute_a_decomposition</a>  &amp; <font color="Maroon" title="c3">X2</font>,<font color="Maroon" title="c5">Y2</font> <a href="tsep_2.html#R4" title="TSEP_2:pred.4">constitute_a_decomposition</a>  )
 ;<br/>

<b>assume </b><a NAME="E2:40"/><i><font color="Green" title="E30">A2</font></i>: 
<font color="Maroon" title="c2">X1</font> <a href="tsep_1.html#R1" title="TSEP_1:pred.1">misses</a> <font color="Maroon" title="c3">X2</font>
 ;<br/>

<b>assume </b><a NAME="E3:40"/>
<font color="Maroon" title="c4">Y1</font>,<font color="Maroon" title="c5">Y2</font> <a href="tsep_1.html#R4" title="TSEP_1:pred.4">are_weakly_separated</a> 
 ;<br/>

<a NAME="E4:40"/><b>then </b>
<font color="Maroon" title="c2">X1</font>,<font color="Maroon" title="c3">X2</font> <a href="tsep_1.html#R4" title="TSEP_1:pred.4">are_weakly_separated</a> 
 
<b>by </b><i><a class="txt" href="tsep_2.html#E1:40"><i><font color="Green" title="E29">A1</font></i></a>, <a class="ref" href="tsep_2.html#T39" target="_self" title="TSEP_2:th.39">Th39</a></i>;<br/>
<b>hence </b><a NAME="E5:40"/>
<font color="Maroon" title="c2">X1</font>,<font color="Maroon" title="c3">X2</font> <a href="tsep_1.html#R3" title="TSEP_1:pred.3">are_separated</a> 
 <b>by </b><i><a class="txt" href="tsep_2.html#E2:40"><i><font color="Green" title="E30">A2</font></i></a>, <a class="ref" href="tsep_1.html#T85" title="TSEP_1:th.85">TSEP_1:85</a></i>;<br/>


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