A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.
Researchers prove CWY angular momentum is supertranslation invariant in double null gauge.
Efficiently optimizes orthogonal and Stiefel matrices on parallel units.
Formulae track evolution of angular momentum and center of mass at null infinity.
The paper defines cross-section continuity for angular momentum definitions and finds the CWY definition valid.
New energy measure for isolated systems in general relativity.
We calculate the limits of the quasi-local angular momentum and center-of-mass defined by Chen-Wang-Yau \cite{CWY} for a family of spacelike two-spheres approaching future null infinity in an asymptotically flat spacetime admitting a Bondi-Sachs expansion. Our result complements earlier work of Chen-Wang-Yau \cite{CWY2…