in a 4D space time, ¿what is de descomposition of de distribution:(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \delta^{(4)} (P_x+P_y-P_z-P_t)[/tex] ???

i think that is equal to

[tex] \delta^{(4)} (P_x+P_y-P_z-P_t)=\delta(P_x) \delta(P_y)\delta(-P_z)\delta(-P_t)[/tex],

but, i dont understand.....

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# Dirac delta 4D

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