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<b>let </b><font color="Maroon">X</font> be   <a href="csspace.html#NM1">ComplexUnitarySpace</a>;<br/><b>let </b><font color="Maroon">x</font> be   <a href="pre_topc.html#NM2">Point</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">y</font> be   <a href="pre_topc.html#NM2">Point</a> of <font color="Maroon">X</font>;<br/>





<b>assume </b><a NAME="E1:62"/>
<font color="Maroon">x</font>,<font color="Maroon">y</font> <a href="csspace.html#R1" target="_self">are_orthogonal</a> 
 ;<br/>

<a NAME="E2:62"/><b>then </b>
<font color="Maroon">x</font> <a href="csspace.html#K12" target="_self">.|.</a> <font color="Maroon">y</font> <a href="hidden.html#R1">=</a> 0
 
<b>by </b><i/>;<br/>
<a NAME="E3:62"/><b>then </b>
<span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">x</font></span>)</span> <a href="csspace.html#K12" target="_self">.|.</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">y</font></span>)</span> <a href="hidden.html#R1">=</a> 0
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E4:62"/>
 <a href="rlvect_1.html#K5">-</a> <font color="Maroon">x</font>, <a href="rlvect_1.html#K5">-</a> <font color="Maroon">y</font> <a href="csspace.html#R1" target="_self">are_orthogonal</a> 
 <b>by </b><i/>;<br/>


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