Recent content by art1915

There is a mistake: The transformation is ##u(r)=(r^3 - r_0^3)^{\frac{1}{3}}##

I am searching for a solution ##R(r)## of the following radial par1 of the Klein-Gordon equation $$[1]\qquad -\left(1-\left(\frac{r_0}{r}\right)^3\right)^{\frac{4}{3}} \partial_r^2 R(r) - \frac{2}{r \left(1-\left(\frac{r_0}{r}\right)^3\right)^{\frac{2}{3}}} \partial_r R(r) +...