- #1
dingo_d
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Homework Statement
I have the following relation:
[itex]\varepsilon^{\mu\nu\alpha\beta}\varepsilon_{\mu\nu\rho\tau}[/itex]
And I have to express that via delta functions.
Homework Equations
I tried looking at the wikipedia but I cannot make sense of that :\
Plus I have once covariant and once contravariant tensor, and I'm summing over 2 indices.