Eisenstein Cohomology for GL‹sub›N‹/sub› and the Special Values of Rankin–Selberg L-Functions : : (AMS-203) / / Anantharam Raghuram, Günter Harder.

• Superior document: Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2019 English
• VerfasserIn: Harder, Günter,; Raghuram, Anantharam,
• MitwirkendeR: Harder, Günter,; Weselmann, Uwe,
• Place / Publishing House: Princeton, NJ : : Princeton University Press, , [2019]; ©2020
• Year of Publication: 2019
• Language: English
• Series: Annals of Mathematics Studies ; 203
• Physical Description: 1 online resource (240 p.) :; 1 b/w illus.

This book studies the interplay between the geometry and topology of locally symmetric spaces, and the arithmetic aspects of the special values of L-functions.The authors study the cohomology of locally symmetric spaces for GL(N) where the cohomology groups are with coefficients in a local system attached to a finite-dimensional algebraic representation of GL(N). The image of the global cohomology in the cohomology of the Borel–Serre boundary is called Eisenstein cohomology, since at a transcendental level the cohomology classes may be described in terms of Eisenstein series and induced representations. However, because the groups are sheaf-theoretically defined, one can control their rationality and even integrality properties. A celebrated theorem by Langlands describes the constant term of an Eisenstein series in terms of automorphic L-functions. A cohomological interpretation of this theorem in terms of maps in Eisenstein cohomology allows the authors to study the rationality properties of the special values of Rankin–Selberg L-functions for GL(n) x GL(m), where n + m = N. The authors carry through the entire program with an eye toward generalizations.This book should be of interest to advanced graduate students and researchers interested in number theory, automorphic forms, representation theory, and the cohomology of arithmetic groups.

Table of Contents

Frontmatter -- Contents -- Preface -- 1. Introduction -- 2. The Cohomology of GLn -- 3. Analytic Tools -- 4. Boundary Cohomology -- 5. The Strongly Inner Spectrum and Applications -- 6. Eisenstein Cohomology -- 7. L-Functions -- 8. Harish-Chandra Modules over Z -- 9. The Archimedean Intertwining Operator -- Bibliography -- Index