Derived Langlands: Monomial Resolutions of Admissible Representations (Number Theory and Its Applications) 1st Edition by Victor Snaith | (PDF) Free Download

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The Langlands Programme is one of the most important areas in modern pure mathematics. The importance of this volume lies in its potential to recast many aspects of the programme in an entirely new context. For example, the morphisms in the monomial category of a locally p–adic Lie group have a distributional description, due to Bruhat in his thesis. Admissible representations in the programme are often treated via convolution algebras of distributions and representations of Hecke algebras. The monomial embedding, introduced in this book, elegantly fits together these two uses of distribution theory. The author follows up this application by giving the monomial category treatment of the Bernstein Centre, classified by Deligne–Bernstein–Zelevinski. This book gives a new categorical setting in which to approach topics well-known to the Langlands Programme experts. Therefore, the context used to explain examples is often the more generally accessible case of representations of finite general linear groups. For example, Galois base-change and epsilon factors for locally p–adic Lie groups are illustrated by the analogous Shintani descent and Kondo–Gauss sums, respectively. General linear groups of local fields are emphasized. However, since the philosophy of this book is essentially that of homotopy theory and algebraic topology, it includes a short appendix showing how the buildings of Bruhat–Tits, sufficient for the general linear group, may be generalised to the tom Dieck spaces (now known as the Baum Connes spaces) when G is a locally p–adic Lie group. The book describes a functorial embedding of the category of admissible k-representations of a locally profinite topological group G into the derived category of the additive category of the admissible k-monomial module category. Experts in the Langlands Programme may be interested to learn that when G is a locally p–adic Lie group, the monomial category is closely related to the category of topological modules over a sort of enlarged Hecke algebra with generators corresponding to characters on compact open modulo the centre subgroups of G. Having set up this functorial embedding, how the ingredients of the celebrated Langlands Programme adapt to the context of the derived monomial module category are examined. These include automorphic representations, epsilon factors and L-functions, modulo forms, Weil Deligne representations, Galois base change and Hecke operators. Readership: Graduate students and researchers in automorphic forms reviewing the concepts from a local-algebraic point of view.

User’s Reviews

Editorial Reviews: Review This book can be regarded as a mathematical legacy of Professor Snaith. It provides an account of several research projects which the author has pursued for many years The book can be recommended to mathematicians who want to learn about monomial resolutions or who are looking for a research topic. –Mathematical Reviews Clippings”Throughout the monograph, the author explains the essential claims in detail and gives enough instructions for a reader to prove the other ones. Overviews of studied topics from the Langlands programme could be convenient for a reader interested in the results given in this book. On the other hand, a reader interested in a connection of monomial resolutions with topics of the Langlands programme has a motivation for further research.” –zbMATH

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