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 Mar 21 awarded Popular Question Dec 12 awarded Notable Question Feb 8 awarded Popular Question Dec 9 awarded Caucus Aug 24 awarded Yearling Jul 28 asked Minimal number of points to define a rotated ellipse? Jul 17 asked Removing parametrization from a system of equations Jul 2 awarded Curious May 31 awarded Popular Question May 22 comment N points in a circle around a point on a sphere. Can you detail the second part ? (Then, use a 3D rotation...) May 22 asked N points in a circle around a point on a sphere. May 9 comment Definite integral $\int_{R_0}^{R}\frac{dr}{r^2\sqrt{\frac{R_0-R_S}{R_0^3}-\frac{1}{r^2}\left(1-\frac{R_{s}}{r}\right)}}$ Redoing all the calculations, I have one last question : why $\wp^{-1}\left(\beta\right) = w_{1}+w_{2}$ ? May 8 asked Expression of $2\int_{0}^{\frac{1}{r_{0}}}\frac{du}{\sqrt{\frac{r_{0}-r_{s}}{r_{0}^{3}}-u^{2}\left(1-u r_{s}\right)}}$ in terms of elliptic integrals May 5 comment Definite integral $\int_{R_0}^{R}\frac{dr}{r^2\sqrt{\frac{R_0-R_S}{R_0^3}-\frac{1}{r^2}\left(1-\frac{R_{s}}{r}\right)}}$ See the related question: physics.stackexchange.com/questions/111272/… if you have any idea.. May 5 accepted Definite integral $\int_{R_0}^{R}\frac{dr}{r^2\sqrt{\frac{R_0-R_S}{R_0^3}-\frac{1}{r^2}\left(1-\frac{R_{s}}{r}\right)}}$ May 5 comment Definite integral $\int_{R_0}^{R}\frac{dr}{r^2\sqrt{\frac{R_0-R_S}{R_0^3}-\frac{1}{r^2}\left(1-\frac{R_{s}}{r}\right)}}$ I've finally implemented it in C++ and it works well ! Thanks ! May 4 accepted Fundamental period of the WeierstrassP elliptic function? May 4 comment Fundamental period of the WeierstrassP elliptic function? @achillehui Is it the complete or half period ? May 4 comment Fundamental period of the WeierstrassP elliptic function? But in that case $\lambda$ is negative as $e_1 > e_2 > e_3$ so I cannot compute the $K(k)$... May 4 comment Fundamental period of the WeierstrassP elliptic function? So it is simply $K(\sqrt{\frac{e_3-e_2}{e_1-e_2}})$ ?