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<b>consider </b><font color="Maroon">X0</font> being  non <a href="struct_0.html#V3">empty</a> <a href="realset2.html#V3">trivial</a> <a href="pre_topc.html#V1">strict</a>  <a href="tsp_1.html#M2" target="_self">SubSpace</a> of <font color="Maroon">Y</font>;<br/>
<b>take </b>
<font color="Maroon">X0</font>
;<br/>

<b>thus </b><a NAME="E2:34_1_1"/>
( <font color="Maroon">X0</font> is <a href="pre_topc.html#V1">strict</a> &amp; <font color="Maroon">X0</font> is <a href="t_0topsp.html#V2">T_0</a> &amp; not <font color="Maroon">X0</font> is <a href="struct_0.html#V3">empty</a> )
 ;<br/>


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