Continuous Symmetries and Integrability of Discrete Equations

Continuous Symmetries and Integrability of Discrete Equations

Author: Decio Levi

Publisher: American Mathematical Society, Centre de Recherches Mathématiques

Published: 2023-01-23

Total Pages: 520

ISBN-13: 0821843540

DOWNLOAD EBOOK

This book on integrable systems and symmetries presents new results on applications of symmetries and integrability techniques to the case of equations defined on the lattice. This relatively new field has many applications, for example, in describing the evolution of crystals and molecular systems defined on lattices, and in finding numerical approximations for differential equations preserving their symmetries. The book contains three chapters and five appendices. The first chapter is an introduction to the general ideas about symmetries, lattices, differential difference and partial difference equations and Lie point symmetries defined on them. Chapter 2 deals with integrable and linearizable systems in two dimensions. The authors start from the prototype of integrable and linearizable partial differential equations, the Korteweg de Vries and the Burgers equations. Then they consider the best known integrable differential difference and partial difference equations. Chapter 3 considers generalized symmetries and conserved densities as integrability criteria. The appendices provide details which may help the readers' understanding of the subjects presented in Chapters 2 and 3. This book is written for PhD students and early researchers, both in theoretical physics and in applied mathematics, who are interested in the study of symmetries and integrability of difference equations.


SIDE III -- Symmetries and Integrability of Difference Equations

SIDE III -- Symmetries and Integrability of Difference Equations

Author: D. Levi

Publisher: American Mathematical Soc.

Published: 2000

Total Pages: 462

ISBN-13: 0821821288

DOWNLOAD EBOOK

This volume contains the proceedings of the third meeting on "Symmetries and Integrability of Difference Equations" (SIDE III). The collection includes original results not published elsewhere and articles that give a rigorous but concise overview of their subject, and provides a complete description of the state of the art. Research in the field of difference equations-often referred to more generally as discrete systems-has undergone impressive development in recent years. In this collection the reader finds the most important new developments in a number of areas, including: Lie-type symmetries of differential-difference and difference-difference equations, integrability of fully discrete systems such as cellular automata, the connection between integrability and discrete geometry, the isomonodromy approach to discrete spectral problems and related discrete Painlevé equations, difference and q-difference equations and orthogonal polynomials, difference equations and quantum groups, and integrability and chaos in discrete-time dynamical systems. The proceedings will be valuable to mathematicians and theoretical physicists interested in the mathematical aspects and/or in the physical applications of discrete nonlinear dynamics, with special emphasis on the systems that can be integrated by analytic methods or at least admit special explicit solutions. The research in this volume will also be of interest to engineers working in discrete dynamics as well as to theoretical biologists and economists.


Difference and Differential Equations

Difference and Differential Equations

Author: Saber Elaydi

Publisher: American Mathematical Soc.

Published: 2004

Total Pages: 450

ISBN-13: 0821833545

DOWNLOAD EBOOK

Contains papers from the 7th International Conference on Difference Equations held at Hunan University (Changsa, China), a satellite conference of ICM2002 Beijing. This book includes articles that cover stability, chaos, symmetries, boundary value problems and bifurcations for discrete dynamical systems, and difference-differential equations.


Discrete Systems and Integrability

Discrete Systems and Integrability

Author: J. Hietarinta

Publisher: Cambridge University Press

Published: 2016-09

Total Pages: 461

ISBN-13: 1107042720

DOWNLOAD EBOOK

A first introduction to the theory of discrete integrable systems at a level suitable for students and non-experts.


Difference Equations, Special Functions and Orthogonal Polynomials

Difference Equations, Special Functions and Orthogonal Polynomials

Author: Saber Elaydi

Publisher: World Scientific

Published: 2007

Total Pages: 789

ISBN-13: 9812770755

DOWNLOAD EBOOK

This volume contains talks given at a joint meeting of three communities working in the fields of difference equations, special functions and applications (ISDE, OPSFA, and SIDE). The articles reflect the diversity of the topics in the meeting but have difference equations as common thread. Articles cover topics in difference equations, discrete dynamical systems, special functions, orthogonal polynomials, symmetries, and integrable difference equations.


Difference Equations, Special Functions And Orthogonal Polynomials - Proceedings Of The International Conference

Difference Equations, Special Functions And Orthogonal Polynomials - Proceedings Of The International Conference

Author: Jim M Cushing

Publisher: World Scientific

Published: 2007-05-21

Total Pages: 789

ISBN-13: 9814475467

DOWNLOAD EBOOK

This volume contains talks given at a joint meeting of three communities working in the fields of difference equations, special functions and applications (ISDE, OPSFA, and SIDE). The articles reflect the diversity of the topics in the meeting but have difference equations as common thread. Articles cover topics in difference equations, discrete dynamical systems, special functions, orthogonal polynomials, symmetries, and integrable difference equations.


The Geometrical Study of Differential Equations

The Geometrical Study of Differential Equations

Author: Joshua Allensworth Leslie

Publisher: American Mathematical Soc.

Published: 2001

Total Pages: 226

ISBN-13: 0821829645

DOWNLOAD EBOOK

This volume contains papers based on some of the talks given at the NSF-CBMS conference on ``The Geometrical Study of Differential Equations'' held at Howard University (Washington, DC). The collected papers present important recent developments in this area, including the treatment of nontransversal group actions in the theory of group invariant solutions of PDEs, a method for obtaining discrete symmetries of differential equations, the establishment of a group-invariant version of the variational complex based on a general moving frame construction, the introduction of a new variational complex for the calculus of difference equations and an original structural investigation of Lie-Backlund transformations. The book opens with a modern and illuminating overview of Lie's line-sphere correspondence and concludes with several interesting open problems arising from symmetry analysis of PDEs. It offers a rich source of inspiration for new or established researchers in the field. This book can serve nicely as a companion volume to a forthcoming book written by the principle speaker at the conference, Professor Niky Kamran, to be published in the AMS series, CBMS Regional Conference Series in Mathematics.


Bäcklund and Darboux Transformations

Bäcklund and Darboux Transformations

Author: A. A. Coley

Publisher: American Mathematical Soc.

Published: 2001

Total Pages: 458

ISBN-13: 0821828037

DOWNLOAD EBOOK

This book is devoted to a classical topic that has undergone rapid and fruitful development over the past 25 years, namely Backlund and Darboux transformations and their applications in the theory of integrable systems, also known as soliton theory. The book consists of two parts. The first is a series of introductory pedagogical lectures presented by leading experts in the field. They are devoted respectively to Backlund transformations of Painleve equations, to the dressing methodand Backlund and Darboux transformations, and to the classical geometry of Backlund transformations and their applications to soliton theory. The second part contains original contributions that represent new developments in the theory and applications of these transformations. Both the introductorylectures and the original talks were presented at an International Workshop that took place in Halifax, Nova Scotia (Canada). This volume covers virtually all recent developments in the theory and applications of Backlund and Darboux transformations.