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Thursday, May 7, 2015

Exploring Quantum Physics - Week 6 Question 1

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}$.

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