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  • © 2019

Automorphic Forms and Even Unimodular Lattices

Kneser Neighbors of Niemeier Lattices

  • Provides an accessible introduction to the Arthur-Langlands conjectures, illustrated by numerous illuminating examples and concrete number theoretic applications
  • Presents the arithmetic theory of automorphic forms for reductive groups over the integers, with an emphasis on phenomena not seen in the traditional GL(2) case
  • Offers a self-contained approach to the theory of Euclidean lattices through the general theory of quadratic forms over Dedekind domains

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Table of contents (10 chapters)

  1. Front Matter

    Pages i-xxi
  2. Introduction

    • Gaëtan Chenevier, Jean Lannes
    Pages 1-17
  3. Bilinear and Quadratic Algebra

    • Gaëtan Chenevier, Jean Lannes
    Pages 19-43
  4. Kneser Neighbors

    • Gaëtan Chenevier, Jean Lannes
    Pages 45-87
  5. Automorphic Forms and Hecke Operators

    • Gaëtan Chenevier, Jean Lannes
    Pages 89-122
  6. Theta Series and Even Unimodular Lattices

    • Gaëtan Chenevier, Jean Lannes
    Pages 123-144
  7. Langlands Parametrization

    • Gaëtan Chenevier, Jean Lannes
    Pages 145-175
  8. A Few Cases of the Arthur–Langlands Conjecture

    • Gaëtan Chenevier, Jean Lannes
    Pages 177-189
  9. Arthur’s Classification for the Classical \(\mathbb {Z}\)-groups

    • Gaëtan Chenevier, Jean Lannes
    Pages 191-244
  10. Proofs of the Main Theorems

    • Gaëtan Chenevier, Jean Lannes
    Pages 245-309
  11. Applications

    • Gaëtan Chenevier, Jean Lannes
    Pages 311-360
  12. Back Matter

    Pages 361-417

About this book

This book includes a self-contained approach of the general theory of quadratic forms and integral Euclidean lattices, as well as a presentation of the theory of automorphic forms and Langlands' conjectures, ranging from the first definitions to the recent and deep classification results due to James Arthur.

Its connecting thread is a question about lattices of rank 24: the problem of p-neighborhoods between Niemeier lattices. This question, whose expression is quite elementary, is in fact very natural from the automorphic point of view, and turns out to be surprisingly intriguing. We explain how the new advances in the Langlands program mentioned above pave the way for a solution. This study proves to be very rich, leading us to classical themes such as theta series, Siegel modular forms, the triality principle, L-functions and congruences between Galois representations.

This monograph is intended for any mathematician with an interest in Euclidean lattices, automorphic forms or number theory. A large part of it is meant to be accessible to non-specialists.

Authors and Affiliations

  • CNRS, Institut de Mathématique d’Orsay, Université Paris-Sud, Orsay, France

    Gaëtan Chenevier

  • Institut de Mathématiques de Jussieu, Université Paris Diderot, Paris, France

    Jean Lannes

About the authors

Gaëtan Chenevier is a number theorist and Senior CNRS Researcher at Université Paris-Sud.


Jean Lannes is a topologist and Emeritus Professor at Université Paris Diderot.

Bibliographic Information

Buy it now

Buying options

eBook USD 59.99 USD 119.00
50% discount Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book USD 79.99 USD 159.99
50% discount Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access