How to do such integrations involving dummy indicials in integrand, for example(adsbygoogle = window.adsbygoogle || []).push({});

(1) How to do integration with dummy indicials ina general wayby hand ? Or is there at least a direction my efforts go along ?

(2) How to do such things or similar integrations but more more complex integrand in Mathematica(or its tensor package xAct)?

(3) I there any book adressing such integrations?

By the way,what I more want to know is how to derive the result of this integration, instead of proving this equation.

Thanks :)

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# How to do integrations with dummy indicials in integrands

Can you offer guidance or do you also need help?

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