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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#NM2" title="VECTSP_1:NM.2">Field</a>;<br/><b>let </b><font color="Maroon" title="c3">M1</font>, <font color="Maroon" title="c4">M2</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 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#K3" title="MATRIX_6:func.3">-</a> <font color="Maroon" title="c4">M2</font></span>)</span> = 
<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#K4" title="RLVECT_1: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="c4">M2</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/>.= 
<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#K4" title="RLVECT_1:func.4">+</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K5" title="RLVECT_1:func.5">-</a> <span class="p2">(<span class="default"><a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <font color="Maroon" title="c4">M2</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="matrix_8.html#T57" target="_self" title="MATRIX_8:th.57">Th57</a></i>
;<br/>
<b>hence </b><a NAME="E2:64"/>
 <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#K3" title="MATRIX_6:func.3">-</a> <font color="Maroon" title="c4">M2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <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#K6" title="RLVECT_1:func.6">-</a> <span class="p1">(<span class="default"><a href="matrix_8.html#K1" title="MATRIX_8:func.1">Trace</a> <font color="Maroon" title="c4">M2</font></span>)</span>
 ;<br/>


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