9 citations · 9 across the 1 of their papers we have counts for
2 papers
gr-qc1999★ 9 cited
Super-energy tensor for space-times with vanishing scalar curvature
M. A. G. Bonilla, C. F. Sopuerta
A four-index tensor is constructed with terms both quadratic in the Riemann tensor and linear in its second derivatives, which has zero divergence for space-times with vanishing sc…
gr-qc1998
Symmetric hyperbolic systems for Bianchi equations
Miguel Á. G. Bonilla
We obtain a family of first-order symmetric hyperbolic systems for the Bianchi equations. They have only physical characteristics: the light cone and timelike hypersurfaces. In the…