List of participants
List of Participants
List of participants
Local and global aspects of separating coordinates for the Klein-Gordon equation
The author considers the Klein-Gordon equation for -dimensional flat spacetime. He is interested in those coordinate systems for which the equation is separable. These coordinate systems are explicitly known and generally do not cover the whole plane. The author constructs tensor fields which he can use to express the locus of points where the coordinates break down.
Local convexifiability of some rigid domains
Locally finitely generated differential spaces of class
Lorentzian manifolds with special holonomy and parallel spinors
The author studies the holonomy group of a simply connected indecomposable and reducible Lorentzian spin manifold under the condition that they admit parallel spinors. He shows that there are only two possible situations: either the manifold is a so-called Brinkmann wave or it has Abelian holonomy and is a pp-manifold – a generalization of a plane-wave. The author gives also sufficient conditions for a Brinkmann wave to have as holonomy the semidirect product of holonomy group of a Riemannian manifold...
Lower bounds for the eigenvalues of the basic Dirac operator