Question:
What is $ \epsilon_{abc}\epsilon_{cde} $.
Solution:
The contraction identity we just shown in the previous post is applied.
$ \epsilon_{abc}\epsilon_{cde} = \epsilon_{cab}\epsilon_{cde} = \delta_{ad}\delta_{be}-\delta_{ae}\delta_{bd}$.
What is $ \epsilon_{abc}\epsilon_{cde} $.
Solution:
The contraction identity we just shown in the previous post is applied.
$ \epsilon_{abc}\epsilon_{cde} = \epsilon_{cab}\epsilon_{cde} = \delta_{ad}\delta_{be}-\delta_{ae}\delta_{bd}$.
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