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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="bhsp_1.html#NM1">RealUnitarySpace</a>;<br/>

<a NAME="E1:10"/><i><font color="Green">E5</font></i>: 
 <a href="xboole_0.html#K1">{}</a>  is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="subset_1.html#T4">SUBSET_1:4</a></i>;<br/>
<a NAME="E2:10"/>
for <font color="Olive">b<sub>1</sub></font>, <font color="Olive">b<sub>2</sub></font> being  <a href="pre_topc.html#NM2">Point</a> of <font color="Maroon">c<sub>1</sub></font> st <font color="Olive">b<sub>1</sub></font> <a href="hidden.html#R2">in</a>  <a href="xboole_0.html#K1">{}</a>  &amp; <font color="Olive">b<sub>2</sub></font> <a href="hidden.html#R2">in</a>  <a href="xboole_0.html#K1">{}</a>  &amp; <font color="Olive">b<sub>1</sub></font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Olive">b<sub>2</sub></font> holds <br/><font color="Olive">b<sub>1</sub></font> <a href="bhsp_1.html#K2">.|.</a> <font color="Olive">b<sub>2</sub></font> <a href="hidden.html#R1">=</a> 0
 
;<br/>
<b>hence </b><a NAME="E3:10"/>
 <a href="xboole_0.html#K1">{}</a>  is    <a href="bhsp_5.html#M1" target="_self">OrthogonalFamily</a> of <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="txt" href="bhsp_5.html#E1:10"><i><font color="Green">E5</font></i></a>, <a class="ref" href="bhsp_5.html#D8" target="_self">Def8</a></i>;<br/>


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