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<b>let </b><font color="Maroon">X</font> be  non <a href="struct_0.html#V3">empty</a> <a href="pre_topc.html#NM1">TopSpace</a>;<br/><b>let </b><font color="Maroon">X0</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="pre_topc.html#M1">SubSpace</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">Y0</font> be    <a href="pre_topc.html#M1">SubSpace</a> of <font color="Maroon">X</font> <a href="tmap_1.html#K8" target="_self">modified_with_respect_to</a> <font color="Maroon">X0</font>;<br/>





<b>assume </b><a NAME="E1:121"/><i><font color="Green">E23</font></i>: 
the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Y0</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">X0</font>
 ;<br/>

<b>set </b><font color="Maroon">Y</font> = <font color="Maroon">X</font> <a href="tmap_1.html#K8" target="_self">modified_with_respect_to</a> <font color="Maroon">X0</font>;<br/>
<b>reconsider </b><font color="Maroon">A</font> = the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">X0</font> as   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">X</font> <b>by </b><i><a class="ref" href="tsep_1.html#T1">TSEP_1:1</a></i>;<br/>
<a NAME="E3:121"/><i><font color="Green">E29</font></i>: 
<font color="Maroon">X</font> <a href="tmap_1.html#K8" target="_self">modified_with_respect_to</a> <font color="Maroon">X0</font> <a href="hidden.html#R1">=</a> <font color="Maroon">X</font> <a href="tmap_1.html#K6" target="_self">modified_with_respect_to</a> <font color="Maroon">A</font>
 
<b>by </b><i/>;<br/>
<b>reconsider </b><font color="Maroon">B</font> = the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Y0</font> as   <a href="struct_0.html#NM2">Subset</a> of <span class="p1">(<span class="default"><font color="Maroon">X</font> <a href="tmap_1.html#K8" target="_self">modified_with_respect_to</a> <font color="Maroon">X0</font></span>)</span> <b>by </b><i><a class="ref" href="tsep_1.html#T1">TSEP_1:1</a></i>;<br/>
<a NAME="E5:121"/>
<font color="Maroon">B</font> is <a href="pre_topc.html#V3">open</a>
 
<b>by </b><i>, <a class="ref" href="tmap_1.html#T19" target="_self">Th19</a>, </i>;<br/>
<b>hence </b><a NAME="E6:121"/>
<font color="Maroon">Y0</font> is  <a href="tsep_1.html#V1">open</a>  <a href="pre_topc.html#M1">SubSpace</a> of <font color="Maroon">X</font> <a href="tmap_1.html#K8" target="_self">modified_with_respect_to</a> <font color="Maroon">X0</font>
 <b>by </b><i><a class="ref" href="tsep_1.html#T16">TSEP_1:16</a></i>;<br/>


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