The Geometry and Topology of Coxeter Groups is a comprehensive and authoritative treatment of Coxeter groups from the viewpoint of geometric group theory. Groups generated by reflections are ubiquitous in mathematics, and there are classical examples of reflection groups in spherical, Euclidean, and hyperbolic geometry. Any Coxeter group can be realized as a group generated by reflection on a certain contractible cell complex, and this complex is the principal subject of this book. The book explains a theorem of Moussong that demonstrates that a polyhedral metric on this cell complex is nonpositively curved, meaning that Coxeter groups are "CAT(0) groups." The book describes the reflection group trick, one of the most potent sources of examples of aspherical manifolds. And the book discusses many important topics in geometric group theory and topology, including Hopf's theory of ends; contractible manifolds and homology spheres; the Poincaré Conjecture; and Gromov's theory of CAT(0) spaces and groups. Finally, the book examines connections between Coxeter groups and some of topology's most famous open problems concerning aspherical manifolds, such as the Euler Characteristic Conjecture and the Borel and Singer conjectures.
... with all exponents equal has constant terms given by the rh.s. of (4.146) but with j replaced by d, as specified in Table 4.1. ... For the root system AN_1 this is a special case of the q-Morris identity of Exercises 4.6 q.3(iv).
32, The Geometry and Topology of Coxeter Groups, by Michael W. Davis Vol. 31, Analysis of Heat Equations on Domains, by El Maati Ouhabaz SYMMETRIC MARKOV PROCESSES, TIME CHANGE, AND BOUNDARY THEORY Zhen-Qing Chen.
32, Geometry and Topology of Coxeter Groups, by Michael Davis Vol. 31, Analysis of Heat Equations on Domains, by El Maati Ouhabaz Prime-Detecting Sieves Glyn Harman PRINCETON UNIVERSITY PRESS PRINCETON AND OXFORD.
Containing ten survey articles written by some of the leading experts in the field, this proceedings volume provides an overview of important recent developments relating to negative curvature.
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This text presents easy to understand proofs of some of the most difficult results about polynomials. It encompasses a self-contained account of the properties of polynomials as analytic functions of a special kind.