- #1

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- 4d notation integration/differentiation

This is probably a stupid question but,

## \frac{d\partial_p}{d\partial_c}=\delta^p_c ##

For the notation of a 4D integral it is ##d^4x=dx^{\nu}##, so if I consider a total derivative:

##\int\limits^{x_f}_{x_i} \partial_{\mu} (\phi) d^4 x = \phi \mid^{x_f}_{x_i} ##

why is there no ##\delta_{\nu}^{\mu}## sort of term required?

## \frac{d\partial_p}{d\partial_c}=\delta^p_c ##

For the notation of a 4D integral it is ##d^4x=dx^{\nu}##, so if I consider a total derivative:

##\int\limits^{x_f}_{x_i} \partial_{\mu} (\phi) d^4 x = \phi \mid^{x_f}_{x_i} ##

why is there no ##\delta_{\nu}^{\mu}## sort of term required?