(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Show by matrix multiplication, [tex]\delta_{ij}v_j = v_i[/tex]

3. The attempt at a solution

I'm having trouble understanding how to do this, because I'm under the impression that [tex]v_j[/tex] is a row vector, which can't be multiplied by a 3x3 matrix which [tex]\delta_{ij}[/tex] is; or am I horribly wrong here?

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# Homework Help: Kronecker Delta

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