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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="rlvect_1.html#NM2">RealLinearSpace</a>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be    <a href="rlsub_1.html#M1">Subspace</a> of <font color="Maroon">c<sub>1</sub></font>;<br/><b>let </b><font color="Maroon">c<sub>3</sub></font> be    <a href="rlsub_2.html#M1" target="_self">Linear_Compl</a> of <font color="Maroon">c<sub>2</sub></font>;<br/>





<a NAME="E1:54"/>
<font color="Maroon">c<sub>1</sub></font> <a href="rlsub_2.html#R1" target="_self">is_the_direct_sum_of</a> <font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font>
 
<b>by </b><i><a class="ref" href="rlsub_2.html#T43" target="_self">Th43</a></i>;<br/>
<b>hence </b><a NAME="E2:54"/>
<font color="Maroon">c<sub>2</sub></font> <a href="rlsub_2.html#K2" target="_self">/\</a> <font color="Maroon">c<sub>3</sub></font> <a href="hidden.html#R1">=</a>  <a href="rlsub_1.html#K1">(0).</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="rlsub_2.html#D4" target="_self">Def4</a></i>;<br/>

<b>hence </b><a NAME="E3:54"/>
<font color="Maroon">c<sub>3</sub></font> <a href="rlsub_2.html#K2" target="_self">/\</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="rlsub_1.html#K1">(0).</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="rlsub_2.html#T18" target="_self">Th18</a></i>;<br/>


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