Bound States for Semilinear Schrödinger Equations with Sign-changing Potential

Bound States for Semilinear Schrödinger Equations with Sign-changing Potential PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 21

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Book Description

Bound States for Semilinear Schrödinger Equations with Sign-changing Potential

Bound States for Semilinear Schrödinger Equations with Sign-changing Potential PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 21

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Book Description


Variational Methods For Strongly Indefinite Problems

Variational Methods For Strongly Indefinite Problems PDF Author: Yanheng Ding
Publisher: World Scientific
ISBN: 9814474509
Category : Mathematics
Languages : en
Pages : 177

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Book Description
This unique book focuses on critical point theory for strongly indefinite functionals in order to deal with nonlinear variational problems in areas such as physics, mechanics and economics. With the original ingredients of Lipschitz partitions of unity of gage spaces (nonmetrizable spaces), Lipschitz normality, and sufficient conditions for the normality, as well as existence-uniqueness of flow of ODE on gage spaces, the book presents for the first time a deformation theory in locally convex topological vector spaces. It also offers satisfying variational settings for homoclinic-type solutions to Hamiltonian systems, Schrödinger equations, Dirac equations and diffusion systems, and describes recent developments in studying these problems. The concepts and methods used open up new topics worthy of in-depth exploration, and link the subject with other branches of mathematics, such as topology and geometry, providing a perspective for further studies in these areas. The analytical framework can be used to handle more infinite-dimensional Hamiltonian systems.

Critical Point Theory

Critical Point Theory PDF Author: Martin Schechter
Publisher: Springer Nature
ISBN: 303045603X
Category : Mathematics
Languages : en
Pages : 347

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Book Description
This monograph collects cutting-edge results and techniques for solving nonlinear partial differential equations using critical points. Including many of the author’s own contributions, a range of proofs are conveniently collected here, Because the material is approached with rigor, this book will serve as an invaluable resource for exploring recent developments in this active area of research, as well as the numerous ways in which critical point theory can be applied. Different methods for finding critical points are presented in the first six chapters. The specific situations in which these methods are applicable is explained in detail. Focus then shifts toward the book’s main subject: applications to problems in mathematics and physics. These include topics such as Schrödinger equations, Hamiltonian systems, elliptic systems, nonlinear wave equations, nonlinear optics, semilinear PDEs, boundary value problems, and equations with multiple solutions. Readers will find this collection of applications convenient and thorough, with detailed proofs appearing throughout. Critical Point Theory will be ideal for graduate students and researchers interested in solving differential equations, and for those studying variational methods. An understanding of fundamental mathematical analysis is assumed. In particular, the basic properties of Hilbert and Banach spaces are used.

The Nonlinear Schrödinger Equation

The Nonlinear Schrödinger Equation PDF Author: Catherine Sulem
Publisher: Springer Science & Business Media
ISBN: 0387227687
Category : Mathematics
Languages : en
Pages : 363

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Book Description
Filling the gap between the mathematical literature and applications to domains, the authors have chosen to address the problem of wave collapse by several methods ranging from rigorous mathematical analysis to formal aymptotic expansions and numerical simulations.

Nonlinear Analysis - Theory and Methods

Nonlinear Analysis - Theory and Methods PDF Author: Nikolaos S. Papageorgiou
Publisher: Springer
ISBN: 3030034305
Category : Mathematics
Languages : en
Pages : 577

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Book Description
This book emphasizes those basic abstract methods and theories that are useful in the study of nonlinear boundary value problems. The content is developed over six chapters, providing a thorough introduction to the techniques used in the variational and topological analysis of nonlinear boundary value problems described by stationary differential operators. The authors give a systematic treatment of the basic mathematical theory and constructive methods for these classes of nonlinear equations as well as their applications to various processes arising in the applied sciences. They show how these diverse topics are connected to other important parts of mathematics, including topology, functional analysis, mathematical physics, and potential theory. Throughout the book a nice balance is maintained between rigorous mathematics and physical applications. The primary readership includes graduate students and researchers in pure and applied nonlinear analysis.

On Positive Multi-lump Bound States of Nonlinear Schrödinger Equations Under Multiple Well Potentials

On Positive Multi-lump Bound States of Nonlinear Schrödinger Equations Under Multiple Well Potentials PDF Author: Yong-Geun Oh
Publisher:
ISBN:
Category :
Languages : en
Pages : 37

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Book Description


Hamiltonian Dynamics and Celestial Mechanics

Hamiltonian Dynamics and Celestial Mechanics PDF Author: Donald Saari
Publisher: American Mathematical Soc.
ISBN: 0821805665
Category : Mathematics
Languages : en
Pages : 250

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Book Description
The symbiotic of these two topics creates a natural combination for a conference on dynamics. Topics covered include twist maps, the Aubrey-Mather theory, Arnold diffusion, qualitative and topological studies of systems, and variational methods, as well as specific topics such as Melnikov's procedure and the singularity properties of particular systems.

Sign-Changing Critical Point Theory

Sign-Changing Critical Point Theory PDF Author: Wenming Zou
Publisher: Springer Science & Business Media
ISBN: 0387766588
Category : Mathematics
Languages : en
Pages : 288

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Book Description
Many nonlinear problems in physics, engineering, biology and social sciences can be reduced to finding critical points of functionals. While minimax and Morse theories provide answers to many situations and problems on the existence of multiple critical points of a functional, they often cannot provide much-needed additional properties of these critical points. Sign-changing critical point theory has emerged as a new area of rich research on critical points of a differentiable functional with important applications to nonlinear elliptic PDEs. This book is intended for advanced graduate students and researchers involved in sign-changing critical point theory, PDEs, global analysis, and nonlinear functional analysis.

Minimax Methods in Critical Point Theory with Applications to Differential Equations

Minimax Methods in Critical Point Theory with Applications to Differential Equations PDF Author: Paul H. Rabinowitz
Publisher: American Mathematical Soc.
ISBN: 0821807153
Category : Mathematics
Languages : en
Pages : 110

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Book Description
The book provides an introduction to minimax methods in critical point theory and shows their use in existence questions for nonlinear differential equations. An expanded version of the author's 1984 CBMS lectures, this volume is the first monograph devoted solely to these topics. Among the abstract questions considered are the following: the mountain pass and saddle point theorems, multiple critical points for functionals invariant under a group of symmetries, perturbations from symmetry, and variational methods in bifurcation theory. The book requires some background in functional analysis and differential equations, especially elliptic partial differential equations. It is addressed to mathematicians interested in differential equations and/or nonlinear functional analysis, particularly critical point theory.

Minimax Theorems

Minimax Theorems PDF Author: Michel Willem
Publisher: Springer Science & Business Media
ISBN: 1461241464
Category : Mathematics
Languages : en
Pages : 168

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Book Description
Many boundary value problems are equivalent to Au=O (1) where A : X --+ Y is a mapping between two Banach spaces. When the problem is variational, there exists a differentiable functional rand inf.