2 problems

Let $M$ be the mass, $A$ the horizon area, $\alpha$ the Einstein–Gauss–Bonnet coupling, and $\chi(\Sigma)$ the Euler characteristic of the horizon. Gauss–Bonnet Penrose conjecture.…

In a gravitational theory, let $T_N^{\mu\nu}$ denote the Noether energy-momentum tensor and $T_H^{\mu\nu}$ the Hilbert energy-momentum tensor. Equivalence conjecture. The Noether a…