## Applications of Lie's Theory of Ordinary and Partial Differential Equations

**Author**: L Dresner

**Publisher:**CRC Press

**ISBN:**9781420050783

**Category:**Science

**Page:**225

**View:**8841

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Lie's group theory of differential equations unifies the many ad hoc methods known for solving differential equations and provides powerful new ways to find solutions. The theory has applications to both ordinary and partial differential equations and is not restricted to linear equations. Applications of Lie's Theory of Ordinary and Partial Differential Equations provides a concise, simple introduction to the application of Lie's theory to the solution of differential equations. The author emphasizes clarity and immediacy of understanding rather than encyclopedic completeness, rigor, and generality. This enables readers to quickly grasp the essentials and start applying the methods to find solutions. The book includes worked examples and problems from a wide range of scientific and engineering fields.

## Applications of Lie Groups to Differential Equations

**Author**: Peter J. Olver

**Publisher:**Springer Science & Business Media

**ISBN:**1468402749

**Category:**Mathematics

**Page:**497

**View:**5018

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This book is devoted to explaining a wide range of applications of con tinuous symmetry groups to physically important systems of differential equations. Emphasis is placed on significant applications of group-theoretic methods, organized so that the applied reader can readily learn the basic computational techniques required for genuine physical problems. The first chapter collects together (but does not prove) those aspects of Lie group theory which are of importance to differential equations. Applications covered in the body of the book include calculation of symmetry groups of differential equations, integration of ordinary differential equations, including special techniques for Euler-Lagrange equations or Hamiltonian systems, differential invariants and construction of equations with pre scribed symmetry groups, group-invariant solutions of partial differential equations, dimensional analysis, and the connections between conservation laws and symmetry groups. Generalizations of the basic symmetry group concept, and applications to conservation laws, integrability conditions, completely integrable systems and soliton equations, and bi-Hamiltonian systems are covered in detail. The exposition is reasonably self-contained, and supplemented by numerous examples of direct physical importance, chosen from classical mechanics, fluid mechanics, elasticity and other applied areas.

## Symmetry Analysis of Differential Equations with Mathematica®

**Author**: Gerd Baumann

**Publisher:**Springer Science & Business Media

**ISBN:**1461221102

**Category:**Mathematics

**Page:**521

**View:**9995

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The first book to explicitly use Mathematica so as to allow researchers and students to more easily compute and solve almost any kind of differential equation using Lie's theory. Previously time-consuming and cumbersome calculations are now much more easily and quickly performed using the Mathematica computer algebra software. The material in this book, and on the accompanying CD-ROM, will be of interest to a broad group of scientists, mathematicians and engineers involved in dealing with symmetry analysis of differential equations. Each section of the book starts with a theoretical discussion of the material, then shows the application in connection with Mathematica. The cross-platform CD-ROM contains Mathematica (version 3.0) notebooks which allow users to directly interact with the code presented within the book. In addition, the author's proprietary "MathLie" software is included, so users can readily learn to use this powerful tool in regard to performing algebraic computations.

## Geometrical Properties of Differential Equations

*Applications of the Lie Group Analysis in Financial Mathematics*

**Author**: Ljudmila A Bordag

**Publisher:**World Scientific Publishing Company

**ISBN:**9814667269

**Category:**Mathematics

**Page:**340

**View:**3805

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This textbook is a short comprehensive and intuitive introduction to Lie group analysis of ordinary and partial differential equations. This practical-oriented material contains a large number of examples and problems accompanied by detailed solutions and figures. In comparison with the known beginner guides to Lie group analysis, the book is oriented toward students who are interested in financial mathematics, mathematical finance and economics. We provide the results of the Lie group analysis of actual models in Financial Mathematics using recent publications. These models are usually formulated as nonlinear partial differential equations and are rather difficult to make use of. With the help of Lie group analysis it is possible to describe some important properties of these models and to obtain interesting reductions in a clear and understandable algorithmic way. The book can serve as a short introduction for a further study of modern geometrical analysis applied to models in financial mathematics. It can also be used as textbook in a master's program, in an intensive compact course, or for self study. The textbook with a large number of examples will be useful not only for students who are interested in Financial Mathematics but also for people who are working in other areas of research that are not directly connected with Physics (for instance in such areas of Applied Mathematics like mathematical economy, bio systems, coding theory, etc.).

## Elementary Lie group analysis and ordinary differential equations

**Author**: Nailʹ Khaĭrullovich Ibragimov

**Publisher:**John Wiley & Sons Inc

**ISBN:**9780471974307

**Category:**Mathematics

**Page:**347

**View:**3842

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Lie group analysis, based on symmetry and invariance principles, is the only systematic method for solving nonlinear differential equations analytically. One of Lie's striking achievements was the discovery that the majority of classical devices for integration of special types of ordinary differential equations could be explained and deduced by his theory. Moreover, this theory provides a universal tool for tackling considerable numbers of differential equations when other means of integration fail. * This is the first modern text on ordinary differential equations where the basic integration methods are derived from Lie group theory * Includes a concise and self contained introduction to differential equations * Easy to follow and comprehensive introduction to Lie group analysis * The methods described in this book have many applications The author provides students and their teachers with a flexible text for undergraduate and postgraduate courses, spanning a variety of topics from the basic theory through to its many applications. The philosophy of Lie groups has become an essential part of the mathematical culture for anyone investigating mathematical models of physical, engineering and natural problems.

## Ordinary Differential Equations with Applications

**Author**: Carmen Chicone

**Publisher:**Springer Science & Business Media

**ISBN:**9780387985350

**Category:**Mathematics

**Page:**561

**View:**7643

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This graduate-level textbook offers students a rapid introduction to the language of ordinary differential equations followed by a careful treatment of the central topics of the qualitative theory. In addition, special attention is given to the origins and applications of differential equations in physical science and engineering.

## ORDINARY AND PARTIAL DIFFERENTIAL EQUATIONS

*THEORY AND APPLICATIONS*

**Author**: NITA H. SHAH

**Publisher:**PHI Learning Pvt. Ltd.

**ISBN:**8120350871

**Category:**Mathematics

**Page:**528

**View:**1148

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This revised and updated text, now in its second edition, continues to present the theoretical concepts of methods of solutions of ordinary and partial differential equations. It equips students with the various tools and techniques to model different physical problems using such equations. The book discusses the basic concepts of ordinary and partial differential equations. It contains different methods of solving ordinary differential equations of first order and higher degree. It gives the solution methodology for linear differential equations with constant and variable coefficients and linear differential equations of second order. The text elaborates simultaneous linear differential equations, total differential equations, and partial differential equations along with the series solution of second order linear differential equations. It also covers Bessel’s and Legendre’s equations and functions, and the Laplace transform. Finally, the book revisits partial differential equations to solve the Laplace equation, wave equation and diffusion equation, and discusses the methods to solve partial differential equations using the Fourier transform. A large number of solved examples as well as exercises at the end of chapters help the students comprehend and strengthen the underlying concepts. The book is intended for undergraduate and postgraduate students of Mathematics (B.A./B.Sc., M.A./M.Sc.), and undergraduate students of all branches of engineering (B.E./B.Tech.), as part of their course in Engineering Mathematics. New to the SECOND Edition • Includes new sections and subsections such as applications of differential equations, special substitution (Lagrange and Riccati), solutions of non-linear equations which are exact, method of variation of parameters for linear equations of order higher than two, and method of undetermined coefficients • Incorporates several worked-out examples and exercises with their answers • Contains a new Chapter 19 on ‘Z-Transforms and its Applications’.

## Applications of the Theory of Groups in Mechanics and Physics

**Author**: Petre P. Teodorescu,Nicolae-A.P. Nicorovici

**Publisher:**Springer Science & Business Media

**ISBN:**1402020473

**Category:**Mathematics

**Page:**446

**View:**8026

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The notion of group is fundamental in our days, not only in mathematics, but also in classical mechanics, electromagnetism, theory of relativity, quantum mechanics, theory of elementary particles, etc. This notion has developed during a century and this development is connected with the names of great mathematicians as E. Galois, A. L. Cauchy, C. F. Gauss, W. R. Hamilton, C. Jordan, S. Lie, E. Cartan, H. Weyl, E. Wigner, and of many others. In mathematics, as in other sciences, the simple and fertile ideas make their way with difficulty and slowly; however, this long history would have been of a minor interest, had the notion of group remained connected only with rather restricted domains of mathematics, those in which it occurred at the beginning. But at present, groups have invaded almost all mathematical disciplines, mechanics, the largest part of physics, of chemistry, etc. We may say, without exaggeration, that this is the most important idea that occurred in mathematics since the invention of infinitesimal calculus; indeed, the notion of group expresses, in a precise and operational form, the vague and universal ideas of regularity and symmetry. The notion of group led to a profound understanding of the character of the laws which govern natural phenomena, permitting to formulate new laws, correcting certain inadequate formulations and providing unitary and non contradictory formulations for the investigated phenomena.

## Linear Theory of Colombeau Generalized Functions

**Author**: M Nedeljkov,S Pilipovic,D Scarpalezos

**Publisher:**CRC Press

**ISBN:**9780582356832

**Category:**Mathematics

**Page:**168

**View:**4310

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Results from the now-classical distribution theory involving convolution and Fourier transformation are extended to cater for Colombeau's generalized functions. Indications are given how these particular generalized functions can be used to investigate linear equations and pseudo differential operators. Furthermore, applications are also given to problems with nonregular data.

## CRC Handbook of Lie Group Analysis of Differential Equations

*Symmetries, Exact Solutions, and Conservation Laws*

**Author**: Nail H. Ibragimov

**Publisher:**CRC Press

**ISBN:**9780849344886

**Category:**Mathematics

**Page:**448

**View:**5621

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Today Lie group theoretical approach to differential equations has been extended to new situations and has become applicable to the majority of equations that frequently occur in applied sciences. Newly developed theoretical and computational methods are awaiting application. Students and applied scientists are expected to understand these methods. Volume 3 and the accompanying software allow readers to extend their knowledge of computational algebra. Written by the world's leading experts in the field, this up-to-date sourcebook covers topics such as Lie-Bäcklund, conditional and non-classical symmetries, approximate symmetry groups for equations with a small parameter, group analysis of differential equations with distributions, integro-differential equations, recursions, and symbolic software packages. The text provides an ideal introduction to the modern group analysis and addresses issues to both beginners and experienced researchers in the application of Lie group methods.

## Theory of Differential Equations

*Partial differential equations*

**Author**: Andrew Russell Forsyth

**Publisher:**CUP Archive

**ISBN:**N.A

**Category:**

**Page:**478

**View:**6200

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## Solution Sets of Differential Equations in Abstract Spaces

**Author**: Robert Dragoni,Paolo Nistri,Pietro Zecca,Jack W Macki

**Publisher:**CRC Press

**ISBN:**9780582294509

**Category:**Mathematics

**Page:**120

**View:**2175

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This book presents results on the geometric/topological structure of the solution set S of an initial-value problem x(t) = f(t, x(t)), x(0) =xo, when f is a continuous function with values in an infinite-dimensional space. A comprehensive survey of existence results and the properties of S, e.g. when S is a connected set, a retract, an acyclic set, is presented. The authors also survey results onthe properties of S for initial-value problems involving differential inclusions, and for boundary-value problems. This book will be of particular interest to researchers in ordinary and partial differential equations and some workers in control theory.

## Progress in Partial Differential Equations The Metz Surveys 2

**Author**: Michel Chipot

**Publisher:**CRC Press

**ISBN:**9780582227699

**Category:**Mathematics

**Page:**248

**View:**5789

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This volume presents papers from the conferences given at the University of Metz in 1992, and presents some recent advances in various important domains of partial differential equations and applied mathematics. A special attempt has been made to make this work accessible to young researchers and non-specialists.

## Nonlinear Theory of Generalized Functions

**Author**: Michael Oberguggenberger,Michael Grosser,Michael Kunzinger,Gunther Hormann

**Publisher:**CRC Press

**ISBN:**9780849306495

**Category:**Mathematics

**Page:**400

**View:**8062

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Questions regarding the interplay of nonlinearity and the creation and propagation of singularities arise in a variety of fields-including nonlinear partial differential equations, noise-driven stochastic partial differential equations, general relativity, and geometry with singularities. A workshop held at the Erwin-Schrödinger International Institute for Mathematical Physics in Vienna investigated these questions and culminated in this volume of invited papers from experts in the fields of nonlinear partial differential equations, structure theory of generalized functions, geometry and general relativity, stochastic partial differential equations, and nonstandard analysis. The authors provide the latest research relevant to work in partial differential equations, mathematical physics, and nonlinear analysis. With a focus on applications, this books provides a compilation of recent approaches to the problem of singularities in nonlinear models. The theory of differential algebras of generalized functions serves as the central theme of the project, along with its interrelations with classical methods.

## Analysis of Weakly Compressible Turbulence Using Symmetry Methods and Direct Numerical Simulation

**Author**: Raphael Gotthard Harald Arlitt

**Publisher:**Cuvillier Verlag

**ISBN:**3865373461

**Category:**

**Page:**201

**View:**4015

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## Symmetries and Integrability of Difference Equations

**Author**: Decio Levi,Peter Olver,Zora Thomova,Pavel Winternitz

**Publisher:**Cambridge University Press

**ISBN:**1139493841

**Category:**Mathematics

**Page:**N.A

**View:**9229

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Difference equations are playing an increasingly important role in the natural sciences. Indeed many phenomena are inherently discrete and are naturally described by difference equations. Phenomena described by differential equations are therefore approximations of more basic discrete ones. Moreover, in their study it is very often necessary to resort to numerical methods. This always involves a discretization of the differential equations involved, thus replacing them by difference equations. This book shows how Lie group and integrability techniques, originally developed for differential equations, have been adapted to the case of difference ones. Each of the eleven chapters is a self-contained treatment of a topic, containing introductory material as well as the latest research results. The book will be welcomed by graduate students and researchers seeking an introduction to the field. As a survey of the current state of the art it will also serve as a valuable reference.

## Conjugate Gradient Type Methods for Ill-Posed Problems

**Author**: Martin Hanke

**Publisher:**CRC Press

**ISBN:**9780582273702

**Category:**Mathematics

**Page:**144

**View:**4765

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The conjugate gradient method is a powerful tool for the iterative solution of self-adjoint operator equations in Hilbert space.This volume summarizes and extends the developments of the past decade concerning the applicability of the conjugate gradient method (and some of its variants) to ill posed problems and their regularization. Such problems occur in applications from almost all natural and technical sciences, including astronomical and geophysical imaging, signal analysis, computerized tomography, inverse heat transfer problems, and many more This Research Note presents a unifying analysis of an entire family of conjugate gradient type methods. Most of the results are as yet unpublished, or obscured in the Russian literature. Beginning with the original results by Nemirovskii and others for minimal residual type methods, equally sharp convergence results are then derived with a different technique for the classical Hestenes-Stiefel algorithm. In the final chapter some of these results are extended to selfadjoint indefinite operator equations. The main tool for the analysis is the connection of conjugate gradient type methods to real orthogonal polynomials, and elementary properties of these polynomials. These prerequisites are provided in a first chapter. Applications to image reconstruction and inverse heat transfer problems are pointed out, and exemplarily numerical results are shown for these applications.

## Selected Topics in the Geometrical Study of Differential Equations

**Author**: Niky Kamran

**Publisher:**American Mathematical Soc.

**ISBN:**9780821889404

**Category:**Mathematics

**Page:**115

**View:**7495

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## Nonlinear Boundary Value Problems in Science and Engineering

**Author**: C. Rogers,W. F. Ames

**Publisher:**Academic Press

**ISBN:**0080958702

**Category:**Computers

**Page:**415

**View:**4033

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Overall, our object has been to provide an applications-oriented text that is reasonably self-contained. It has been used as the basis for a graduate-level course both at the University of Waterloo and at the Centro Studie Applicazioni in Tecnologie Avante, Bari, Italy. The text is aimed, in the main, at applied mathematicians with a strong interest in physical applications or at engineers working in theoretical mechanics.

## Lie-Theoretic Ode Numerical Analysis, Mechanics and Differential Systems

**Author**: Robert Hermann

**Publisher:**Math-Sci Press

**ISBN:**9780915692453

**Category:**Mathematics

**Page:**286

**View:**8794

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