Nicola Garofalo, University of Padova, Italy & Arizona State University
A basic problem in analysis is the Dirichlet problem for the Laplacian in the upper half-space. It is a classical fact that the trace of the Neumann derivative of the solution equals the half-Laplacian of the boundary datum. In a seminal 2007 paper…
Po-Ning Chen, UCR
Abstract: The definition of angular momentum in general relativity has been a subtle issue since the 1960s, due to the 'supertranslation ambiguity'.
In this talk, we will discuss how the mathematical theory of quasilocal mass and angular momentum leads to a new definition of angular
momentum at null infinity…