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<b>let </b><font color="Maroon">V</font> be   <a href="bhsp_1.html#NM1">RealUnitarySpace</a>;<br/><b>let </b><font color="Maroon">W1</font> be    <a href="rusub_1.html#M1">Subspace</a> of <font color="Maroon">V</font>, <font color="Maroon">W2</font> be    <a href="rusub_1.html#M1">Subspace</a> of <font color="Maroon">V</font>, <font color="Maroon">W3</font> be    <a href="rusub_1.html#M1">Subspace</a> of <font color="Maroon">V</font>;<br/>



<b>assume </b><a NAME="E1:38"/><i><font color="Green">E20</font></i>: 
<font color="Maroon">W1</font> is  <a href="bhsp_1.html#V1">strict</a>  <a href="rusub_1.html#M1">Subspace</a> of <font color="Maroon">W3</font>
 ;<br/>

<b>thus </b><span class="p1">(<span class="default"><font color="Maroon">W1</font> <a href="rusub_2.html#K1" target="_self">+</a> <font color="Maroon">W2</font></span>)</span> <a href="rusub_2.html#K2" target="_self">/\</a> <font color="Maroon">W3</font> = 
<font color="Maroon">W3</font> <a href="rusub_2.html#K2" target="_self">/\</a> <span class="p1">(<span class="default"><font color="Maroon">W1</font> <a href="rusub_2.html#K1" target="_self">+</a> <font color="Maroon">W2</font></span>)</span>
<b>by </b><i/>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">W1</font> <a href="rusub_2.html#K2" target="_self">/\</a> <font color="Maroon">W3</font></span>)</span> <a href="rusub_2.html#K1" target="_self">+</a> <span class="p1">(<span class="default"><font color="Maroon">W3</font> <a href="rusub_2.html#K2" target="_self">/\</a> <font color="Maroon">W2</font></span>)</span>
<b>by </b><i><a class="ref" href="rusub_2.html#T1" target="_self">Th1</a>, </i>
<br/>.= 
<font color="Maroon">W1</font> <a href="rusub_2.html#K1" target="_self">+</a> <span class="p1">(<span class="default"><font color="Maroon">W3</font> <a href="rusub_2.html#K2" target="_self">/\</a> <font color="Maroon">W2</font></span>)</span>
<b>by </b><i><a class="ref" href="rusub_2.html#T1" target="_self">Th1</a>, </i>
<br/>.= 
<font color="Maroon">W1</font> <a href="rusub_2.html#K1" target="_self">+</a> <span class="p1">(<span class="default"><font color="Maroon">W2</font> <a href="rusub_2.html#K2" target="_self">/\</a> <font color="Maroon">W3</font></span>)</span>
<b>by </b><i/>
;<br/>


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