In one guise or another, many mathematicians are familiar with certain arithmetic groups, such as $\mathbf{Z}$ or $\textrm{SL}(n,\mathbf{Z})$. Yet, many applications of arithmetic groups and many connections to other subjects within mathematics are less well known. Indeed, arithmetic groups admit many natural and important generalizations. The purpose of this expository book is to explain, through some brief and informal comments and extensive references, what arithmetic groups and their generalizations are, why they are important to study, and how they can be understood and applied to many fields, such as analysis, geometry, topology, number theory, representation theory, and algebraic geometry. It is hoped that such an overview will shed a light on the important role played by arithmetic groups in modern mathematics. Titles in this series are co-published with International Press, Cambridge, MA. Table of Contents: Introduction; General comments on references; Examples of basic arithmetic groups; General arithmetic subgroups and locally symmetric spaces; Discrete subgroups of Lie groups and arithmeticity of lattices in Lie groups; Different completions of $\mathbb{Q}$ and $S$-arithmetic groups over number fields; Global fields and $S$-arithmetic groups over function fields; Finiteness properties of arithmetic and $S$-arithmetic groups; Symmetric spaces, Bruhat-Tits buildings and their arithmetic quotients; Compactifications of locally symmetric spaces; Rigidity of locally symmetric spaces; Automorphic forms and automorphic representations for general arithmetic groups; Cohomology of arithmetic groups; $K$-groups of rings of integers and $K$-groups of group rings; Locally homogeneous manifolds and period domains; Non-cofinite discrete groups, geometrically finite groups; Large scale geometry of discrete groups; Tree lattices; Hyperbolic groups; Mapping class groups and outer automorphism groups of free groups; Outer automorphism group of free groups and the outer spaces; References; Index. Review from Mathematical Reviews: ...the author deserves credit for having done the tremendous job of encompassing every aspect of arithmetic groups visible in today's mathematics in a systematic manner; the book should be an important guide for some time to come. (AMSIP/43.)
Algebraic Groups and Their Generalizations: Classical Methods: Summer Research Institute on Algebraic Groups and Their Generalizations, July 6-26, 1991, Pennsylvania...
Arithmetic Groups
Selberg observed that Weil's bound (2.9) implies Z(m, n ; s) is holomorphic for re(s) < # and therefore A, 2 # . ... Selberg's estimate Al 2 # can be sharpened to A, - # using Jacquet-Gelbart lift (GJ) of automorphic representations of ...
They are rich, diverse structures and they arise in many areas of study. This text enables you to build a solid, rigorous foundation in the subject.
... groups, Springer, New York, 1972. MR0507234 Overviews that are more recent (but without detailed proofs) include: [Ji] L. Ji, Arithmetic groups and their generalizations, American Mathematical Society, Providence, RI, 2008. MR2410298 ...
All the contributors are outstanding authorities in their respective fields, and the essays, which are directed to historians and philosophers of mathematics as well as to mathematicians who are concerned with the foundations of their ...
Algebraic groups and their generalizations: Classical methods
... groups Gn of upper triangular n- by-n matrices with extremal diagonal entries equal to 1 satisfy .Gn .ZŒ1p// D n 1 for any prime p. Brown [Bro87] also proved that Thompson's groups and some of their generalizations are of type F1. For the ...
Arithmetic Groups
The subject of this handbook is Teichmuller theory in a wide sense, namely the theory of geometric structures on surfaces and their moduli spaces.