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<b>consider </b><font color="Maroon" title="c1">X</font> being  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a> <a href="struct_0.html#V7" title="STRUCT_0:attr.7">trivial</a> <a href="pre_topc.html#V1" title="PRE_TOPC:attr.1">strict</a> <a href="pre_topc.html#NM1" title="PRE_TOPC:NM.1">TopSpace</a>;<br/>
<b>take </b>
<font color="Maroon" title="c1">X</font>
;<br/>

<b>thus </b><a NAME="E2:10_1_1"/>
( <font color="Maroon" title="c1">X</font> is <a href="pre_topc.html#V1" title="PRE_TOPC:attr.1">strict</a> &amp; <font color="Maroon" title="c1">X</font> is <a href="t_0topsp.html#V2" title="T_0TOPSP:attr.2">T_0</a> &amp; not <font color="Maroon" title="c1">X</font> is <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a> )
 ;<br/>


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