Fourier Restriction, Decoupling, and Applications

Fourier Restriction, Decoupling, and Applications
Author: Ciprian Demeter
Publisher: Cambridge University Press
Total Pages: 349
Release: 2020-01-02
Genre: Mathematics
ISBN: 1108603610


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The last fifteen years have seen a flurry of exciting developments in Fourier restriction theory, leading to significant new applications in diverse fields. This timely text brings the reader from the classical results to state-of-the-art advances in multilinear restriction theory, the Bourgain–Guth induction on scales and the polynomial method. Also discussed in the second part are decoupling for curved manifolds and a wide variety of applications in geometric analysis, PDEs (Strichartz estimates on tori, local smoothing for the wave equation) and number theory (exponential sum estimates and the proof of the Main Conjecture for Vinogradov's Mean Value Theorem). More than 100 exercises in the text help reinforce these important but often difficult ideas, making it suitable for graduate students as well as specialists. Written by an author at the forefront of the modern theory, this book will be of interest to everybody working in harmonic analysis.

Recent Developments in Harmonic Analysis and its Applications

Recent Developments in Harmonic Analysis and its Applications
Author: Shaoming Guo
Publisher: American Mathematical Society
Total Pages: 182
Release: 2024-01-24
Genre: Mathematics
ISBN: 147047140X


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This volume contains the proceedings of the virtual AMS Special Session on Harmonic Analysis, held from March 26–27, 2022. Harmonic analysis has gone through rapid developments in the past decade. New tools, including multilinear Kakeya inequalities, broad-narrow analysis, polynomial methods, decoupling inequalities, and refined Strichartz inequalities, are playing a crucial role in resolving problems that were previously considered out of reach. A large number of important works in connection with geometric measure theory, analytic number theory, partial differential equations, several complex variables, etc., have appeared in the last few years. This book collects some examples of this work.

Polynomial Methods and Incidence Theory

Polynomial Methods and Incidence Theory
Author: Adam Sheffer
Publisher: Cambridge University Press
Total Pages: 264
Release: 2022-03-24
Genre: Mathematics
ISBN: 1108963013


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The past decade has seen numerous major mathematical breakthroughs for topics such as the finite field Kakeya conjecture, the cap set conjecture, Erdős's distinct distances problem, the joints problem, as well as others, thanks to the introduction of new polynomial methods. There has also been significant progress on a variety of problems from additive combinatorics, discrete geometry, and more. This book gives a detailed yet accessible introduction to these new polynomial methods and their applications, with a focus on incidence theory. Based on the author's own teaching experience, the text requires a minimal background, allowing graduate and advanced undergraduate students to get to grips with an active and exciting research front. The techniques are presented gradually and in detail, with many examples, warm-up proofs, and exercises included. An appendix provides a quick reminder of basic results and ideas.

Toeplitz Matrices and Operators

Toeplitz Matrices and Operators
Author: Nikolaï Nikolski
Publisher: Cambridge University Press
Total Pages: 453
Release: 2020-01-02
Genre: Mathematics
ISBN: 110719850X


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A friendly introduction to Toeplitz theory and its applications throughout modern functional analysis.

Foundations of Stable Homotopy Theory

Foundations of Stable Homotopy Theory
Author: David Barnes
Publisher: Cambridge University Press
Total Pages: 432
Release: 2020-03-26
Genre: Mathematics
ISBN: 1108672671


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The beginning graduate student in homotopy theory is confronted with a vast literature on spectra that is scattered across books, articles and decades. There is much folklore but very few easy entry points. This comprehensive introduction to stable homotopy theory changes that. It presents the foundations of the subject together in one place for the first time, from the motivating phenomena to the modern theory, at a level suitable for those with only a first course in algebraic topology. Starting from stable homotopy groups and (co)homology theories, the authors study the most important categories of spectra and the stable homotopy category, before moving on to computational aspects and more advanced topics such as monoidal structures, localisations and chromatic homotopy theory. The appendix containing essential facts on model categories, the numerous examples and the suggestions for further reading make this a friendly introduction to an often daunting subject.

The Character Theory of Finite Groups of Lie Type

The Character Theory of Finite Groups of Lie Type
Author: Meinolf Geck
Publisher: Cambridge University Press
Total Pages: 406
Release: 2020-02-27
Genre: Mathematics
ISBN: 1108808905


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Through the fundamental work of Deligne and Lusztig in the 1970s, further developed mainly by Lusztig, the character theory of reductive groups over finite fields has grown into a rich and vast area of mathematics. It incorporates tools and methods from algebraic geometry, topology, combinatorics and computer algebra, and has since evolved substantially. With this book, the authors meet the need for a contemporary treatment, complementing in core areas the well-established books of Carter and Digne–Michel. Focusing on applications in finite group theory, the authors gather previously scattered results and allow the reader to get to grips with the large body of literature available on the subject, covering topics such as regular embeddings, the Jordan decomposition of characters, d-Harish–Chandra theory and Lusztig induction for unipotent characters. Requiring only a modest background in algebraic geometry, this useful reference is suitable for beginning graduate students as well as researchers.

Higher Index Theory

Higher Index Theory
Author: Rufus Willett
Publisher: Cambridge University Press
Total Pages: 595
Release: 2020-07-02
Genre: Mathematics
ISBN: 1108491065


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A friendly introduction to higher index theory, a rapidly-developing subject at the intersection of geometry, topology and operator algebras. A well-balanced combination of introductory material (with exercises), cutting-edge developments and references to the wider literature make this book a valuable guide for graduate students and experts alike.

Generators of Markov Chains

Generators of Markov Chains
Author: Adam Bobrowski
Publisher: Cambridge University Press
Total Pages: 279
Release: 2020-11-26
Genre: Mathematics
ISBN: 1108495796


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A clear explanation of what an explosive Markov chain does after it passes through all available states in finite time.

Derived Categories

Derived Categories
Author: Amnon Yekutieli
Publisher: Cambridge University Press
Total Pages: 622
Release: 2019-12-19
Genre: Mathematics
ISBN: 1108321607


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There have been remarkably few systematic expositions of the theory of derived categories since its inception in the work of Grothendieck and Verdier in the 1960s. This book is the first in-depth treatment of this important component of homological algebra. It carefully explains the foundations in detail before moving on to key applications in commutative and noncommutative algebra, many otherwise unavailable outside of research articles. These include commutative and noncommutative dualizing complexes, perfect DG modules, and tilting DG bimodules. Written with graduate students in mind, the emphasis here is on explicit constructions (with many examples and exercises) as opposed to axiomatics, with the goal of demystifying this difficult subject. Beyond serving as a thorough introduction for students, it will serve as an important reference for researchers in algebra, geometry and mathematical physics.

From Categories to Homotopy Theory

From Categories to Homotopy Theory
Author: Birgit Richter
Publisher: Cambridge University Press
Total Pages: 402
Release: 2020-04-16
Genre: Mathematics
ISBN: 1108847625


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Category theory provides structure for the mathematical world and is seen everywhere in modern mathematics. With this book, the author bridges the gap between pure category theory and its numerous applications in homotopy theory, providing the necessary background information to make the subject accessible to graduate students or researchers with a background in algebraic topology and algebra. The reader is first introduced to category theory, starting with basic definitions and concepts before progressing to more advanced themes. Concrete examples and exercises illustrate the topics, ranging from colimits to constructions such as the Day convolution product. Part II covers important applications of category theory, giving a thorough introduction to simplicial objects including an account of quasi-categories and Segal sets. Diagram categories play a central role throughout the book, giving rise to models of iterated loop spaces, and feature prominently in functor homology and homology of small categories.