78 citations
5 papers
Geometry and Dynamics of Discrete Isometry Groups of Higher Rank Symmetric Spaces
Gabriele Link
For real hyperbolic spaces, the dynamics of individual isometries and the geometry of the limit set of nonelementary discrete isometry groups have been studied in great detail. Mos…
Dark Matter visible by the EGRET Excess of Diffuse Galactic Gamma Rays?
W. de Boer
The public data from the EGRET space telescope on diffuse galactic gamma rays in the energy range from 0.1 to 10 GeV show an excess for energies above 1 GeV in comparison with the…
Asymptotic geometry and growth of conjugacy classes of nonpositively curved manifolds
Gabriele Link
Let X be a Hadamard manifold and a discrete group of isometries of X which contains an axial isometry without invariant flat half plane. We study the behavior of conformal dens…
EGRET Excess of Galactic Gamma Rays as Signal of Dark Matter Annihilation
W. de Boer
The EGRET excess in the diffuse galactic gamma ray data above 1 GeV shows all features expected from Dark Matter WIMP Annihilation: a)it is present and has the same spectrum in all…
A Neural Bayesian Estimator for Conditional Probability Densities
Michael Feindt
This article describes a robust algorithm to estimate a conditional probability density f(t|x) as a non-parametric smooth regression function. It is based on a neural network and t…