# Math Help - Help with matrix trace

1. ## Help with matrix trace

Hi guys,

I need to prove that $tr(AB)=tr(BA)$

thank you so much in advanced!

edit:
$A,B\in F^{n\times n}$ of course...

2. ## Re: Help with matrix trace

Well here you go, I hope it helps

-Dan

4. ## Re: Help with matrix trace

Hmmm, me?
I guess I could use some () around my summations, but if I did make a fatal error, then I got temporarely blind. Would you mind pointing it out?

5. ## Re: Help with matrix trace

that is absolutley brilliant.
thank you so much, Zouzz.