Recent content by benjamin_cro

Hello, Can someone please help me to understand equation (10) from this article http://arxiv.org/abs/gr-qc/0607020. I do not see how does spherically symmetric tensor must (can) be written in that form. Thanks, Benjamin

Thank you very much for your explanation.

Problem arises from next situation. If we have some distribution (of mass for example) on a ring which is given by \begin{equation} \rho=m\delta(\phi) \end{equation} where phi is azimuthal angle. What is the value of integral ? \begin{equation} \int_0^{2\pi} \! \rho \, \mathrm{d}...