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 Feb 22 accepted Poincare Patch covers half of the hyperboloid of AdS Dec 30 awarded Promoter Dec 28 asked How does one derive the 2 halo term in two-point correlation function Dec 20 awarded Nice Question Nov 28 comment Is it possible to flow current in open circuit? Simply speaking no. For an open circuit, the end points will be at same potential. You need a potential difference for current to flow. Also, please don't put smileys in question. Nov 28 revised How do you find the speed of sound in the problem? Corrected formulas, deleted redundant equation and gave a little more explanation. Nov 28 suggested approved edit on How do you find the speed of sound in the problem? Nov 28 comment How do you find the speed of sound in the problem? I don't see how the second equation $d = \frac{1}{2}gt^2$ is valid for sound. The second equation is for the stone which you have already mentioned before. There should be just 3 equations. Nov 27 comment A particular case when Lagrange equation is equivalent to equation of motion on a Riemannian manifold Could you clarify your question? Do you want to know if the coordinates of the generalized coordinate system that you want to set up is a Reimannian manifold? OR,do you want to know if Lagrange's Equations are equations of motion or not? If its the second then yeah! obviously Lagrange's Equations do give you equations of motion. Nov 16 asked Poincare Patch covers half of the hyperboloid of AdS Nov 15 revised Faddeev-Popov ghost propagator in canonical quantization Second formula was wrong, the bar was on c(x) which should have been on c(y) Nov 15 suggested approved edit on Faddeev-Popov ghost propagator in canonical quantization Nov 15 awarded Critic Nov 1 revised Getting the AdS metric from maximally symmetric spaces added 4 characters in body Nov 1 asked Getting the AdS metric from maximally symmetric spaces Oct 12 accepted What is meant by the term “mean rest frame”? Oct 10 comment Matrix and exponential term problem What exactly is $\tau_{3}$ Oct 10 asked What is meant by the term “mean rest frame”? May 3 asked Scale invariance Vs Conformal invariance Apr 12 comment How to derive addition of velocities without the Lorentz transformation? Elegant answer!!! +1 to Ron.