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Trace of a matrix equals sum of its determinants? 
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#1
Feb809, 03:42 PM

P: 86

If a matrix is diagonalizable, how does its trace equal the sum of its eigenvalues?
I can't find a proof for this anywhere. 


#2
Feb809, 03:43 PM

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Sci Advisor
PF Gold
P: 16,091

What is the trace of a diagonal matrix? What are the algebraic properties of trace?



#3
Feb909, 08:44 AM

P: 86

Ah I see, the trace is similarity invariant. thanks



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