<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon">F</font> be   <a href="vectsp_1.html#NM2">Field</a>;<br/><b>let </b><font color="Maroon">S</font> be   <a href="ortsp_1.html#NM1">OrtSp</a> of <font color="Maroon">F</font>;<br/><b>let </b><font color="Maroon">b</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">S</font>;<br/><b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">S</font>;<br/><b>let </b><font color="Maroon">p</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">S</font>;<br/><b>let </b><font color="Maroon">c</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">S</font>;<br/>











<b>set </b><font color="Maroon">0V</font> =  <a href="rlvect_1.html#K1">0.</a> <font color="Maroon">S</font>;<br/>
<b>assume </b><a NAME="E1:24"/><i><font color="Green">E22</font></i>: 
( not <font color="Maroon">b</font> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font> &amp; <font color="Maroon">p</font> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font> )
 ;<br/>

<a NAME="E2:24"/><b>then </b>
not <font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i/>;<br/>
<a NAME="E3:24"/><b>then </b><i><font color="Green">E26</font></i>: 
( <font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font> &amp; <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p3">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font> &amp; <font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p3">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <span class="p2">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font> )
 
<b>by </b><i>, </i>;<br/>
<a NAME="E4:24"/><i><font color="Green">E27</font></i>: 
<span class="p1">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p2">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E5:24"/><i><font color="Green">E29</font></i>: 
 <a href="rlvect_1.html#K5">-</a> <font color="Maroon">p</font> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E6:24"/>
<font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="txt" href="ortsp_1.html#E1:24"><i><font color="Green">E22</font></i></a>, <a class="ref" href="vectsp_1.html#D26">VECTSP_1:def 26</a></i>;<br/>
<a NAME="E7:24"/><b>then </b>
<span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p3">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="vectsp_1.html#T64">VECTSP_1:64</a></i>;<br/>
<a NAME="E8:24"/><b>then </b>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p5">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p3">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="txt" href="ortsp_1.html#E6"><i><font color="Green">Lemma23</font></i></a>, </i>;<br/>
<a NAME="E9:24"/><b>then </b>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p3">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p4">(<span class="default"><span class="p5">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p0">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p3">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D11">RLVECT_1:def 11</a></i>;<br/>
<a NAME="E10:24"/><b>then </b>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p3">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p4">(<span class="default"><span class="p5">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p0">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p5">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p3">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D11">RLVECT_1:def 11</a></i>;<br/>
<a NAME="E11:24"/><b>then </b>
<span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p5">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p5">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D6">RLVECT_1:def 6</a></i>;<br/>
<a NAME="E12:24"/><b>then </b>
<span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p5">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K1">0.</a> <font color="Maroon">S</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#T16">RLVECT_1:16</a></i>;<br/>
<a NAME="E13:24"/><b>then </b>
<font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p4">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#T10">RLVECT_1:10</a></i>;<br/>
<a NAME="E14:24"/><b>then </b><i><font color="Green">E30</font></i>: 
<font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p3">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D11">RLVECT_1:def 11</a></i>;<br/>
<a NAME="E15:24"/>
<span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">p</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">c</font></span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p4">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="txt" href="ortsp_1.html#E1:24"><i><font color="Green">E22</font></i></a>, , </i>;<br/>
<a NAME="E16:24"/><b>then </b>
<span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">p</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">c</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p5">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D11">RLVECT_1:def 11</a></i>;<br/>
<a NAME="E17:24"/><b>then </b>
<span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">p</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p3">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p4">(<span class="default"><span class="p5">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p0">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D6">RLVECT_1:def 6</a></i>;<br/>
<a NAME="E18:24"/><b>then </b>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">p</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p5">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D6">RLVECT_1:def 6</a></i>;<br/>
<a NAME="E19:24"/><b>then </b>
<span class="p1">(<span class="default"><a href="rlvect_1.html#K1">0.</a> <font color="Maroon">S</font></span>)</span> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p2">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p5">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#T16">RLVECT_1:16</a></i>;<br/>
<a NAME="E20:24"/><b>then </b>
<font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p4">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#T10">RLVECT_1:10</a></i>;<br/>
<a NAME="E21:24"/><b>then </b>
<font color="Maroon">c</font> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p3">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span></span>)</span> <a href="vectsp_1.html#K6">*</a> <font color="Maroon">b</font></span>)</span> <a href="symsp_1.html#R1">_|_</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="rlvect_1.html#D11">RLVECT_1:def 11</a></i>;<br/>
<b>hence </b><a NAME="E22:24"/>
(  <a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<span class="p1">(<span class="default"><font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span>,<font color="Maroon">c</font> <a href="hidden.html#R1">=</a>  <a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font> &amp;  <a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">p</font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="ortsp_1.html#K1" target="_self">ProJ</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font> )
 <b>by </b><i>, <a class="txt" href="ortsp_1.html#E1:24"><i><font color="Green">E22</font></i></a>, , </i>;<br/>


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