# Coleman, Mandula ## All possible symmetries of the S matrix \[Links: [DOI](https://journals.aps.org/pr/abstract/10.1103/PhysRev.159.1251)\] \[Abstract: \] ## Refs - [[0558 Coleman-Mandula theorem]] ## Comments - internal symmetry and spacetime symmetry do not mix # Israel ## Event Horizons in Static Vacuum Space-Times \[Links: [DOI](https://doi.org/10.1103/PhysRev.164.1776)\] \[Abstract: The following theorem is established. Among all static, asymptotically flat vacuum space-times with closed simply connected equipotential surfaces $g_{00}=\text{constant}$, the Schwarzschild solution is the only one which has a nonsingular infinite-red-shift surface $g_{00}=0$. Thus there exists no static asymmetric perturbation of the Schwarzschild manifold due to internal sources (e.g., a quadrupole moment) which will preserve a regular event horizon. Possible implications of this result for asymmetric gravitational collapse are briefly discussed.\] ## Summary - earliest work on [[0455 Black hole uniqueness theorems]]