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<b>let </b><font color="Maroon" title="c1">n</font> be   <a href="nat_1.html#NM1" title="NAT_1:NM.1">Nat</a>;<br/><b>let </b><font color="Maroon" title="c2">K</font> be   <a href="vectsp_1.html#NM3" title="VECTSP_1:NM.3">Field</a>;<br/><b>let </b><font color="Maroon" title="c3">M1</font> be   <a href="matrix_1.html#NM5" title="MATRIX_1:NM.5">Matrix</a> of <font color="Maroon" title="c1">n</font>,<font color="Maroon" title="c2">K</font>;<br/>





<a NAME="E1:62"/><i><font color="Green" title="E14">A1</font></i>: 
(  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <font color="Maroon" title="c3">M1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">n</font> &amp;  <a href="matrix_1.html#K1" title="MATRIX_1:func.1">width</a> <font color="Maroon" title="c3">M1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">n</font> )
 
<b>by </b><i><a class="ref" href="matrix_1.html#T25" title="MATRIX_1:th.25">MATRIX_1:25</a></i>;<br/>
<span class="p1">(<span class="default"><a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <font color="Maroon" title="c3">M1</font></span>)</span> <a href="rlvect_1.html#K3" title="RLVECT_1:func.3">+</a> <span class="p1">(<span class="default"><a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <span class="p2">(<span class="default"><a href="matrix_6.html#K1" title="MATRIX_6:func.1">-</a> <font color="Maroon" title="c3">M1</font></span>)</span></span>)</span> = 
 <a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">M1</font> <a href="matrix_6.html#K2" title="MATRIX_6:func.2">+</a> <span class="p2">(<span class="default"><a href="matrix_6.html#K1" title="MATRIX_6:func.1">-</a> <font color="Maroon" title="c3">M1</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="matrix_8.html#T54" target="_self" title="MATRIX_8:th.54">Th54</a></i>
<br/>.= 
 <a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <span class="p1">(<span class="default"><a href="matrix_3.html#K1" title="MATRIX_3:func.1">0.</a> <font color="Maroon" title="c2">K</font>,<font color="Maroon" title="c1">n</font>,<font color="Maroon" title="c1">n</font></span>)</span>
<b>by </b><i><a class="txt" href="matrix_8.html#E1:62"><i><font color="Green" title="E14">A1</font></i></a>, <a class="ref" href="matrix_4.html#T2" title="MATRIX_4:th.2">MATRIX_4:2</a></i>
<br/>.= 
 <a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <span class="p1">(<span class="default"><a href="matrix_1.html#K11" title="MATRIX_1:func.11">0.</a> <font color="Maroon" title="c2">K</font>,<font color="Maroon" title="c1">n</font></span>)</span>

<br/>.= 
 <a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <font color="Maroon" title="c2">K</font>
<b>by </b><i><a class="ref" href="matrix_8.html#T56" target="_self" title="MATRIX_8:th.56">Th56</a></i>
;<br/>
<b>hence </b><a NAME="E3:62"/>
 <a href="algstr_0.html#K4" title="ALGSTR_0:func.4">-</a> <span class="p1">(<span class="default"><a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <span class="p2">(<span class="default"><a href="matrix_6.html#K1" title="MATRIX_6:func.1">-</a> <font color="Maroon" title="c3">M1</font></span>)</span></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <font color="Maroon" title="c3">M1</font>
 <b>by </b><i><a class="ref" href="rlvect_1.html#T19" title="RLVECT_1:th.19">RLVECT_1:19</a></i>;<br/>


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