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<b>let </b><font color="Maroon">K</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="group_1.html#L1">HGrStr</a> ;<br/><b>let </b><font color="Maroon">a1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">K</font>;<br/><b>let </b><font color="Maroon">a2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">K</font>;<br/><b>let </b><font color="Maroon">b1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">K</font>;<br/><b>let </b><font color="Maroon">b2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">K</font>;<br/>









<a NAME="E1:82"/>
( <span class="p1"><a href="rlvect_1.html#K7">&lt;*</a><span class="default"><font color="Maroon">a1</font>,<font color="Maroon">a2</font></span><a href="rlvect_1.html#K7">*&gt;</a></span> <a href="hidden.html#R1">=</a> <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><font color="Maroon">a1</font></span><a href="matrix_2.html#K4">*&gt;</a></span> <a href="finseq_1.html#K8">^</a> <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><font color="Maroon">a2</font></span><a href="matrix_2.html#K4">*&gt;</a></span> &amp; <span class="p1"><a href="rlvect_1.html#K7">&lt;*</a><span class="default"><font color="Maroon">b1</font>,<font color="Maroon">b2</font></span><a href="rlvect_1.html#K7">*&gt;</a></span> <a href="hidden.html#R1">=</a> <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><font color="Maroon">b1</font></span><a href="matrix_2.html#K4">*&gt;</a></span> <a href="finseq_1.html#K8">^</a> <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><font color="Maroon">b2</font></span><a href="matrix_2.html#K4">*&gt;</a></span> )
 
<b>by </b><i><a class="ref" href="finseq_1.html#D9">FINSEQ_1:def 9</a></i>;<br/>
<b>hence </b> <a href="fvsum_1.html#K11" target="_self">mlt</a> <span class="p1"><a href="rlvect_1.html#K7">&lt;*</a><span class="default"><font color="Maroon">a1</font>,<font color="Maroon">a2</font></span><a href="rlvect_1.html#K7">*&gt;</a></span>,<span class="p1"><a href="rlvect_1.html#K7">&lt;*</a><span class="default"><font color="Maroon">b1</font>,<font color="Maroon">b2</font></span><a href="rlvect_1.html#K7">*&gt;</a></span> = 
<span class="p1">(<span class="default"><a href="fvsum_1.html#K12" target="_self">mlt</a> <span class="p2"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><font color="Maroon">a1</font></span><a href="matrix_2.html#K4">*&gt;</a></span>,<span class="p2"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><font color="Maroon">b1</font></span><a href="matrix_2.html#K4">*&gt;</a></span></span>)</span> <a href="finseq_1.html#K8">^</a> <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">a2</font> <a href="group_1.html#K1">*</a> <font color="Maroon">b2</font></span>)</span></span><a href="matrix_2.html#K4">*&gt;</a></span>
<b>by </b><i><a class="ref" href="fvsum_1.html#T11" target="_self">Th11</a></i>
<br/>.= 
<span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">a1</font> <a href="group_1.html#K1">*</a> <font color="Maroon">b1</font></span>)</span></span><a href="matrix_2.html#K4">*&gt;</a></span> <a href="finseq_1.html#K8">^</a> <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">a2</font> <a href="group_1.html#K1">*</a> <font color="Maroon">b2</font></span>)</span></span><a href="matrix_2.html#K4">*&gt;</a></span>
<b>by </b><i><a class="ref" href="fvsum_1.html#T10" target="_self">Th10</a></i>
<br/>.= 
<span class="p1"><a href="rlvect_1.html#K7">&lt;*</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">a1</font> <a href="group_1.html#K1">*</a> <font color="Maroon">b1</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a2</font> <a href="group_1.html#K1">*</a> <font color="Maroon">b2</font></span>)</span></span><a href="rlvect_1.html#K7">*&gt;</a></span>
<b>by </b><i><a class="ref" href="finseq_1.html#D9">FINSEQ_1:def 9</a></i>
;<br/><br/>


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