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<b>consider </b><font color="Maroon" title="c2">Y0</font> being  non <a href="struct_0.html#V3" title="STRUCT_0:attr.3">empty</a> <a href="pre_topc.html#V1" title="PRE_TOPC:attr.1">strict</a> <a href="realset2.html#V3" title="REALSET2:attr.3">trivial</a>  <a href="pre_topc.html#M1" title="PRE_TOPC:mode.1">SubSpace</a> of <font color="Maroon" title="c1">Y</font>;<br/>
<b>take </b>
<font color="Maroon" title="c2">Y0</font>
;<br/>

<b>thus </b><a NAME="E2:47_1_1"/>
( <font color="Maroon" title="c2">Y0</font> is <a href="tex_2.html#V2" title="TEX_2:attr.2">proper</a> &amp; <font color="Maroon" title="c2">Y0</font> is <a href="realset2.html#V3" title="REALSET2:attr.3">trivial</a> &amp; <font color="Maroon" title="c2">Y0</font> is <a href="pre_topc.html#V1" title="PRE_TOPC:attr.1">strict</a> )
 ;<br/>


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