Basic Modern Theory of Linear Complex Analytic $q$-Difference Equations

Basic Modern Theory of Linear Complex Analytic $q$-Difference Equations PDF Author: Jacques Sauloy
Publisher: American Mathematical Society
ISBN: 1470478404
Category : Mathematics
Languages : en
Pages : 693

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Book Description
The roots of the modern theories of differential and $q$-difference equations go back in part to an article by George D. Birkhoff, published in 1913, dealing with the three ?sister theories? of differential, difference and $q$-difference equations. This book is about $q$-difference equations and focuses on techniques inspired by differential equations, in line with Birkhoff's work, as revived over the last three decades. It follows the approach of the Ramis school, mixing algebraic and analytic methods. While it uses some $q$-calculus and is illustrated by $q$-special functions, these are not its main subjects. After a gentle historical introduction with emphasis on mathematics and a thorough study of basic problems such as elementary $q$-functions, elementary $q$-calculus, and low order equations, a detailed algebraic and analytic study of scalar equations is followed by the usual process of transforming them into systems and back again. The structural algebraic and analytic properties of systems are then described using $q$-difference modules (Newton polygon, filtration by the slopes). The final chapters deal with Fuchsian and irregular equations and systems, including their resolution, classification, Riemann-Hilbert correspondence, and Galois theory. Nine appendices complete the book and aim to help the reader by providing some fundamental yet not universally taught facts. There are 535 exercises of various styles and levels of difficulty. The main prerequisites are general algebra and analysis as taught in the first three years of university. The book will be of interest to expert and non-expert researchers as well as graduate students in mathematics and physics.

Basic Modern Theory of Linear Complex Analytic $q$-Difference Equations

Basic Modern Theory of Linear Complex Analytic $q$-Difference Equations PDF Author: Jacques Sauloy
Publisher: American Mathematical Society
ISBN: 1470478404
Category : Mathematics
Languages : en
Pages : 693

Get Book Here

Book Description
The roots of the modern theories of differential and $q$-difference equations go back in part to an article by George D. Birkhoff, published in 1913, dealing with the three ?sister theories? of differential, difference and $q$-difference equations. This book is about $q$-difference equations and focuses on techniques inspired by differential equations, in line with Birkhoff's work, as revived over the last three decades. It follows the approach of the Ramis school, mixing algebraic and analytic methods. While it uses some $q$-calculus and is illustrated by $q$-special functions, these are not its main subjects. After a gentle historical introduction with emphasis on mathematics and a thorough study of basic problems such as elementary $q$-functions, elementary $q$-calculus, and low order equations, a detailed algebraic and analytic study of scalar equations is followed by the usual process of transforming them into systems and back again. The structural algebraic and analytic properties of systems are then described using $q$-difference modules (Newton polygon, filtration by the slopes). The final chapters deal with Fuchsian and irregular equations and systems, including their resolution, classification, Riemann-Hilbert correspondence, and Galois theory. Nine appendices complete the book and aim to help the reader by providing some fundamental yet not universally taught facts. There are 535 exercises of various styles and levels of difficulty. The main prerequisites are general algebra and analysis as taught in the first three years of university. The book will be of interest to expert and non-expert researchers as well as graduate students in mathematics and physics.

Handbook of Geometry and Topology of Singularities VI: Foliations

Handbook of Geometry and Topology of Singularities VI: Foliations PDF Author: Felipe Cano
Publisher: Springer Nature
ISBN: 3031541723
Category :
Languages : en
Pages : 500

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Book Description


Galois Theories of Linear Difference Equations: An Introduction

Galois Theories of Linear Difference Equations: An Introduction PDF Author: Charlotte Hardouin
Publisher: American Mathematical Soc.
ISBN: 1470426552
Category : Mathematics
Languages : en
Pages : 185

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Book Description
This book is a collection of three introductory tutorials coming out of three courses given at the CIMPA Research School “Galois Theory of Difference Equations” in Santa Marta, Columbia, July 23–August 1, 2012. The aim of these tutorials is to introduce the reader to three Galois theories of linear difference equations and their interrelations. Each of the three articles addresses a different galoisian aspect of linear difference equations. The authors motivate and give elementary examples of the basic ideas and techniques, providing the reader with an entry to current research. In addition each article contains an extensive bibliography that includes recent papers; the authors have provided pointers to these articles allowing the interested reader to explore further.

Symmetries and Related Topics in Differential and Difference Equations

Symmetries and Related Topics in Differential and Difference Equations PDF Author: David Blázquez-Sanz
Publisher: American Mathematical Soc.
ISBN: 0821868721
Category : Mathematics
Languages : en
Pages : 178

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Book Description
The papers collected here discuss topics such as Lie symmetries, equivalence transformations and differential invariants, group theoretical methods in linear equations, and the development of some geometrical methods in theoretical physics. The reader will find new results in symmetries of differential and difference equations, applications in classical and quantum mechanics, two fundamental problems of theoretical mechanics, and the mathematical nature of time in Lagrangian mechanics.

Differential Galois Theory through Riemann-Hilbert Correspondence

Differential Galois Theory through Riemann-Hilbert Correspondence PDF Author: Jacques Sauloy
Publisher: American Mathematical Soc.
ISBN: 1470430959
Category : Mathematics
Languages : en
Pages : 303

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Book Description
Differential Galois theory is an important, fast developing area which appears more and more in graduate courses since it mixes fundamental objects from many different areas of mathematics in a stimulating context. For a long time, the dominant approach, usually called Picard-Vessiot Theory, was purely algebraic. This approach has been extensively developed and is well covered in the literature. An alternative approach consists in tagging algebraic objects with transcendental information which enriches the understanding and brings not only new points of view but also new solutions. It is very powerful and can be applied in situations where the Picard-Vessiot approach is not easily extended. This book offers a hands-on transcendental approach to differential Galois theory, based on the Riemann-Hilbert correspondence. Along the way, it provides a smooth, down-to-earth introduction to algebraic geometry, category theory and tannakian duality. Since the book studies only complex analytic linear differential equations, the main prerequisites are complex function theory, linear algebra, and an elementary knowledge of groups and of polynomials in many variables. A large variety of examples, exercises, and theoretical constructions, often via explicit computations, offers first-year graduate students an accessible entry into this exciting area.

Discrete Painlevé Equations

Discrete Painlevé Equations PDF Author: Nalini Joshi
Publisher: American Mathematical Soc.
ISBN: 1470450380
Category : Mathematics
Languages : en
Pages : 154

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Book Description
Discrete Painlevé equations are nonlinear difference equations, which arise from translations on crystallographic lattices. The deceptive simplicity of this statement hides immensely rich mathematical properties, connecting dynamical systems, algebraic geometry, Coxeter groups, topology, special functions theory, and mathematical physics. This book necessarily starts with introductory material to give the reader an accessible entry point to this vast subject matter. It is based on lectures that the author presented as principal lecturer at a Conference Board of Mathematical Sciences and National Science Foundation conference in Texas in 2016. Instead of technical theorems or complete proofs, the book relies on providing essential points of many arguments through explicit examples, with the hope that they will be useful for applied mathematicians and physicists.

Complex Differential and Difference Equations

Complex Differential and Difference Equations PDF Author: Galina Filipuk
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110611422
Category : Mathematics
Languages : en
Pages : 474

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Book Description
With a balanced combination of longer survey articles and shorter, peer-reviewed research-level presentations on the topic of differential and difference equations on the complex domain, this edited volume presents an up-to-date overview of areas such as WKB analysis, summability, resurgence, formal solutions, integrability, and several algebraic aspects of differential and difference equations.

Catalogue and Circular (1878/79, 1884/85 "Circular") of the Illinois Industrial University (later "of the University of Illinois")

Catalogue and Circular (1878/79, 1884/85 Author: University of Illinois (Urbana-Champaign campus)
Publisher:
ISBN:
Category :
Languages : en
Pages : 1250

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Book Description


University of Illinois Bulletin

University of Illinois Bulletin PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 88

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Book Description


University of Illinois at Urbana-Champaign

University of Illinois at Urbana-Champaign PDF Author: University of Illinois at Urbana-Champaign. Graduate College
Publisher:
ISBN:
Category : Education, Higher
Languages : en
Pages : 538

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Book Description