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E-book
Author Costa, David G.

Title An invitation to variational methods in differential equations / David G. Costa
Published Boston : Birkhäuser, 2007

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Description 1 online resource (xii, 138 pages) : illustrations
Contents Preface.-Introduction.-Critical Points Via Minimization.-The Deformation Theorem.-The Mountain-Pass Theorem.-The Saddle-Point Theorem.-Critical Points under Constraints.-A Duality Principle.-Critical Points under Symmetries.-Problems with an S1-Symmetry.-Problems with Lack of Compactness.-Lack of Compactness for Bounded Omega.-Index
Summary This book is a short introductory text to variational techniques with applications to differential equations. It presents a sampling of topics in critical point theory with applications to existence and multiplicity of solutions in nonlinear problems involving ordinary differential equations (ODEs) and partial differential equations (PDEs). Five simple problems in ODEs which illustrate existence of solutions from a variational point of view are introduced in the first chapter. These problems set the stage for the topics covered, including minimization, deformation results, the mountain-pass theorem, the saddle-point theorem, critical points under constraints, a duality principle, critical points in the presence of symmetry, and problems with lack of compactness. Each topic is presented in a straightforward manner, and followed by one or two illustrative applications. The concise, straightforward, user-friendly approach of this textbook will appeal to graduate students and researchers interested in differential equations, analysis, and functional analysis
Notes Textbook for graduates
Bibliography Includes bibliographical references (pages 131-134) and index
Notes Print version record
Subject Differential equations.
Differential equations
Variationsrechnung -- Differentialgleichung.
Differentialgleichung -- Variationsrechnung.
Form Electronic book
ISBN 9780817645366
0817645365
9780817672027
0817672028