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Jun 28, 2021 at 15:44 vote accept Gabriel Palau
Jun 28, 2021 at 15:38 comment added Gabriel Palau yes! you are right
Jun 28, 2021 at 15:37 comment added Willie Wong no. You need $|x^0| + |\vec{x}| < t_2$. The region shrinks as $|x^0|$ grows.
Jun 28, 2021 at 15:35 comment added Gabriel Palau Thanks a lot. So is also true that $G(x^0,x^1,x^2,x^3)=h(x^0,x^1)$ for $\|\vec{x}\|<t_{2}$ ?
Jun 28, 2021 at 15:00 history answered Willie Wong CC BY-SA 4.0