I'm sorry if it is a silly question, but I've looked elsewhere and I haven't found the answer.(adsbygoogle = window.adsbygoogle || []).push({});

Please tell me if any of the following is true:

∂_{μ}^{†}= -∂_{μ}

∂_{i}^{†}= -∂_{i}

∂^{μ}^{†}= -∂^{μ}

∂^{i}^{†}= -∂^{i}

I'm studying QFT and I don't know how to proceed when I have to take the adjoint of a derivative. Sometimes it looks like one of these has to be true, sometimes it doesn't, and I don't know what to think anymore.

Thanks for your time

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# I Adjoint of the derivative in Minkowsky space.

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