Hi,
the development version contains some experimental functionality to deal
with Cartesian objects, but this is not very well tested, c.f. my thesis
<https://mediatum.ub.tum.de/download/1359697/1359697.pdf>
starting with page 166 for a brief description. The exact command would be
CLC[a, c, d] CLC[b, c, d] // Contract
which yields
2 CartesianPair[CartesianIndex[a], CartesianIndex[b]]
Cheers,
Vladyslav
Am 15.03.2018 um 16:13 schrieb Selcuk:
> Hi,
>
> As far as I understand LeviCivita function is defined for four component.
>
> How can I use Levi-Civita with three indices?
>
> For instance, how can I show the relations;
> $\epsilon^{acd} \epsilon^{bcd}$ = 2 \delta^{ab}
>
> Thanks in advance.
>
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