In this paper, new upper matrix bounds for the solution of the continuous algebraic Riccati equation (CARE) are derived. Following the derivation of each bound, iterative algorithms are developed forâ€¦ (More)

Spherically symmetric static fluid sources are endowed with rotation and embedded in Kerr empty space-time up to an including quadratic terms in an angular velocity parameter using Darmois junctionâ€¦ (More)

A spherically symmetric comoving fluid solution of Einstein's equations is adapted for cosmological application by extending the geometry of standard FRW cosmology using a generalised curvature term.â€¦ (More)

The symmetry method is used to derive solutions of Einsteinâ€™s equations for fluid spheres using an isotropic metric and a velocity four vector that is non-comoving. Initially the Lie, classicalâ€¦ (More)