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<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="rlvect_1.html#D6">RLVECT_1:def 6</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">y</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">z</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font>, <font color="Maroon">y'</font> = <font color="Maroon">y</font>, <font color="Maroon">z'</font> = <font color="Maroon">z</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><span class="p1">(<span class="default"><font color="Maroon">x</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">y</font></span>)</span> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">z</font> = 
the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><font color="Maroon">x</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">y</font></span>)</span>,<font color="Maroon">z</font>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default">the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x</font>,<font color="Maroon">y</font></span>)</span>,<font color="Maroon">z</font>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">y'</font></span>)</span>,<font color="Maroon">z'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">y'</font></span>)</span> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<font color="Maroon">x'</font> <a href="binop_2.html#K9">+</a> <span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font></span>)</span>

<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<span class="p1">(<span class="default"><a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">y'</font>,<font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x</font>,<span class="p1">(<span class="default"><font color="Maroon">y</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">z</font></span>)</span>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<font color="Maroon">x</font> <a href="rlvect_1.html#K2">+</a> <span class="p1">(<span class="default"><font color="Maroon">y</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">z</font></span>)</span>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="rlvect_1.html#D7">RLVECT_1:def 7</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><font color="Maroon">x</font> <a href="rlvect_1.html#K2">+</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K1">0.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> </span>)</span> = 
the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x</font>,<span class="p1">(<span class="default"><a href="rlvect_1.html#K1">0.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> </span>)</span>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<font color="Maroon">x'</font> <a href="binop_2.html#K9">+</a> 0
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<font color="Maroon">x</font>

;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="rlvect_1.html#D8">RLVECT_1:def 8</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>reconsider </b><font color="Maroon">y</font> =  <a href="binop_2.html#K7">-</a> <font color="Maroon">x'</font> as   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  ;<br/><b>take </b><font color="Maroon">y'</font> = <font color="Maroon">y</font>;<br/><b>thus </b><font color="Maroon">x</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">y'</font> = 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K1">.</a> <font color="Maroon">x'</font>,<font color="Maroon">y'</font>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<font color="Maroon">x'</font> <a href="binop_2.html#K9">+</a> <span class="p1">(<span class="default"><a href="binop_2.html#K7">-</a> <font color="Maroon">x'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
 <a href="rlvect_1.html#K1">0.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> 

;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="rlvect_1.html#D5">RLVECT_1:def 5</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">y</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font>, <font color="Maroon">y'</font> = <font color="Maroon">y</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><font color="Maroon">x</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">y</font> = 
the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x</font>,<font color="Maroon">y</font>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">x'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">y'</font>,<font color="Maroon">x'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<font color="Maroon">y</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">x</font>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="group_1.html#D16">GROUP_1:def 16</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">y</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font>, <font color="Maroon">y'</font> = <font color="Maroon">y</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <font color="Maroon">y</font> = 
<font color="Maroon">y'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<font color="Maroon">y</font> <a href="group_1.html#K1">*</a> <font color="Maroon">x</font>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="group_1.html#D4">GROUP_1:def 4</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">y</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">z</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font>, <font color="Maroon">y'</font> = <font color="Maroon">y</font>, <font color="Maroon">z'</font> = <font color="Maroon">z</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><span class="p1">(<span class="default"><font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <font color="Maroon">y</font></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z</font> = 
<a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">y'</font></span>)</span>,<font color="Maroon">z'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">y'</font></span>)</span> <a href="binop_2.html#K11">*</a> <font color="Maroon">z'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">z'</font></span>)</span>

<br/>.= 
<a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><font color="Maroon">y</font> <a href="group_1.html#K1">*</a> <font color="Maroon">z</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="vectsp_1.html#D19" target="_self">VECTSP_1:def 19</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><span class="p1">(<span class="default"><a href="group_1.html#K2">1.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> </span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">x</font> = 
1 <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font>
<b>by </b><i>, <a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<font color="Maroon">x</font>

;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="vectsp_1.html#D13" target="_self">VECTSP_1:def 13</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><a href="group_1.html#K2">1.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> </span>)</span> = 
1 <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font>
<b>by </b><i>, <a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<font color="Maroon">x</font>

;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="vectsp_1.html#D18" target="_self">VECTSP_1:def 18</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">y</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> , <font color="Maroon">z</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font>, <font color="Maroon">y'</font> = <font color="Maroon">y</font>, <font color="Maroon">z'</font> = <font color="Maroon">z</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>thus </b><font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><font color="Maroon">y</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">z</font></span>)</span> = 
the <a href="group_1.html#U1">mult</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x</font>,<span class="p1">(<span class="default">the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">y</font>,<font color="Maroon">z</font></span>)</span>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">y'</font></span>)</span> <a href="binop_2.html#K9">+</a> <span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">z'</font></span>)</span>

<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">y'</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<font color="Maroon">y'</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<font color="Maroon">y'</font></span>)</span>,<span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">x'</font>,<font color="Maroon">z'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <font color="Maroon">y</font></span>)</span> <a href="rlvect_1.html#K2">+</a> <span class="p1">(<span class="default"><font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <font color="Maroon">z</font></span>)</span>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
;<br/><b>thus </b><span class="p1">(<span class="default"><font color="Maroon">y</font> <a href="rlvect_1.html#K2">+</a> <font color="Maroon">z</font></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">x</font> = 
the <a href="group_1.html#U1">mult</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default">the <a href="rlvect_1.html#U1">add</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">y</font>,<font color="Maroon">z</font></span>)</span>,<font color="Maroon">x</font>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
<br/>.= 
<a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font></span>)</span>,<font color="Maroon">x'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K9">+</a> <font color="Maroon">z'</font></span>)</span> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font></span>)</span> <a href="binop_2.html#K9">+</a> <span class="p1">(<span class="default"><font color="Maroon">z'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font></span>)</span>

<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><font color="Maroon">y'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">z'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D9">BINOP_2:def 9</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">y'</font>,<font color="Maroon">x'</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">z'</font> <a href="binop_2.html#K11">*</a> <font color="Maroon">x'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<a href="binop_2.html#K33">addreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">y'</font>,<font color="Maroon">x'</font></span>)</span>,<span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <font color="Maroon">z'</font>,<font color="Maroon">x'</font></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">y</font> <a href="group_1.html#K1">*</a> <font color="Maroon">x</font></span>)</span> <a href="rlvect_1.html#K2">+</a> <span class="p1">(<span class="default"><font color="Maroon">z</font> <a href="group_1.html#K1">*</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i><a class="ref" href="rlvect_1.html#T5">RLVECT_1:5</a></i>
;<br/></div>
<b>end;</b></div>

<div><b>hereby </b> <i><font color="Red">:: according to </font></i><a class="ref" href="vectsp_1.html#D20" target="_self">VECTSP_1:def 20</a>
<div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a> ;<br/><b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  ;<br/><b>assume </b><a NAME="E2:24_1_1_10"/>
<font color="Maroon">x</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="rlvect_1.html#K1">0.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> 
 ;<br/><a NAME="E3:24_1_1_10"/><b>then </b><i><font color="Green">E46</font></i>: 
<font color="Maroon">x'</font> <a href="binop_2.html#K11">*</a> <span class="p1">(<span class="default"><font color="Maroon">x'</font> <a href="binop_2.html#K8">"</a> </span>)</span> <a href="hidden.html#R1">=</a> 1
 <b>by </b><i><a class="ref" href="xcmplx_0.html#D7">XCMPLX_0:def 7</a></i>;<br/><b>reconsider </b><font color="Maroon">y</font> = <font color="Maroon">x'</font> <a href="binop_2.html#K8">"</a>  as   <a href="struct_0.html#NM1">Element</a> of <a href="vectsp_1.html#K3" target="_self">F_Real</a>  ;<br/><b>take </b><font color="Maroon">y</font> = <font color="Maroon">y</font>;<br/><b>thus </b><a NAME="E5:24_1_1_10"/>
<font color="Maroon">x</font> <a href="group_1.html#K1">*</a> <font color="Maroon">y</font> <a href="hidden.html#R1">=</a>  <a href="group_1.html#K2">1.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> 
 <b>by </b><i>, , <a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>;<br/></div>
<b>end;</b></div>

<b>thus </b><a NAME="E11:24_1_1"/>
 <a href="rlvect_1.html#K1">0.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a>  <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="group_1.html#K2">1.</a> <a href="vectsp_1.html#K3" target="_self">F_Real</a> 
 <b>by </b><i/>; <i><font color="Red">:: according to </font></i><a class="ref" href="vectsp_1.html#D21" target="_self">VECTSP_1:def 21</a><br/>


</div>
