1) To develop solution generating theorems for charged anisotropic fluid spheres in general diagonal
coordinates, Gaussian polar coordinates, Synge isothermal coordinates, Buchdahl coordinates, generalized Buchdahl coordinates, and isotropic coordinates, using pressure and density as parameters.
2) To classify charged anisotropic fluid solutions into seed and non-seed solutions.
3) To investigate the regularity conditions at the center of fluid spheres.
4) To calculate the central red shift, the surface red shift, and the compactness of stars.
