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<b>take </b>
 <a href="vectsp10.html#K1" target="_self">StructVectSp</a> <font color="Maroon">c<sub>1</sub></font>
;<br/>

<b>thus </b><a NAME="E1:9_1_1"/>
not  <a href="vectsp10.html#K1" target="_self">StructVectSp</a> <font color="Maroon">c<sub>1</sub></font> is <a href="realset2.html#V3">trivial</a>
 ;<br/>


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