Download or read book Introduction to Actions of Discrete Groups on Pseudo-Riemannian Homogeneous Manifolds written by Toshiyuki Kobayashi and published by . This book was released on 2001 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This article is based on two lectures on 'Discontinuous groups for non-Riemannian homogeneous spaces' delivered at the 2000 Twente Conference on Lie Groups. The topic has developed quite rapidly since late 1980s, by various new methods including theory of actions of non-compact Lie groups, discrete groups, characteristic classes, ergodic theory, symplectic geometry, unitary representation theory (especially, the restriction to subgroups) and so on. Such diversity of methods has pushed forward the topic actively by stimulating interactions of different fields of mathematics on one hand, but on the other hand it might make beginners feel difficult to access it. The purpose of the lectures was to give an accessible exposition by clarifying the current status of some of central problems in this topic."