Non-Self-Adjoint Differential Operators, Spectral Asymptotics and Random Perturbations

Non-Self-Adjoint Differential Operators, Spectral Asymptotics and Random Perturbations PDF Author: Johannes Sjöstrand
Publisher: Springer
ISBN: 3030108198
Category : Mathematics
Languages : en
Pages : 496

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Book Description
The asymptotic distribution of eigenvalues of self-adjoint differential operators in the high-energy limit, or the semi-classical limit, is a classical subject going back to H. Weyl of more than a century ago. In the last decades there has been a renewed interest in non-self-adjoint differential operators which have many subtle properties such as instability under small perturbations. Quite remarkably, when adding small random perturbations to such operators, the eigenvalues tend to distribute according to Weyl's law (quite differently from the distribution for the unperturbed operators in analytic cases). A first result in this direction was obtained by M. Hager in her thesis of 2005. Since then, further general results have been obtained, which are the main subject of the present book. Additional themes from the theory of non-self-adjoint operators are also treated. The methods are very much based on microlocal analysis and especially on pseudodifferential operators. The reader will find a broad field with plenty of open problems.

Non-Self-Adjoint Differential Operators, Spectral Asymptotics and Random Perturbations

Non-Self-Adjoint Differential Operators, Spectral Asymptotics and Random Perturbations PDF Author: Johannes Sjöstrand
Publisher: Springer
ISBN: 3030108198
Category : Mathematics
Languages : en
Pages : 496

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Book Description
The asymptotic distribution of eigenvalues of self-adjoint differential operators in the high-energy limit, or the semi-classical limit, is a classical subject going back to H. Weyl of more than a century ago. In the last decades there has been a renewed interest in non-self-adjoint differential operators which have many subtle properties such as instability under small perturbations. Quite remarkably, when adding small random perturbations to such operators, the eigenvalues tend to distribute according to Weyl's law (quite differently from the distribution for the unperturbed operators in analytic cases). A first result in this direction was obtained by M. Hager in her thesis of 2005. Since then, further general results have been obtained, which are the main subject of the present book. Additional themes from the theory of non-self-adjoint operators are also treated. The methods are very much based on microlocal analysis and especially on pseudodifferential operators. The reader will find a broad field with plenty of open problems.

Analysis Meets Geometry

Analysis Meets Geometry PDF Author: Mats Andersson
Publisher: Birkhäuser
ISBN: 3319524712
Category : Mathematics
Languages : en
Pages : 466

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Book Description
This book is dedicated to the memory of Mikael Passare, an outstanding Swedish mathematician who devoted his life to developing the theory of analytic functions in several complex variables and exploring geometric ideas first-hand. It includes several papers describing Mikael’s life as well as his contributions to mathematics, written by friends of Mikael’s who share his attitude and passion for science. A major section of the book presents original research articles that further develop Mikael’s ideas and which were written by his former students and co-authors. All these mathematicians work at the interface of analysis and geometry, and Mikael’s impact on their research cannot be underestimated. Most of the contributors were invited speakers at the conference organized at Stockholm University in his honor. This book is an attempt to express our gratitude towards this great mathematician, who left us full of energy and new creative mathematical ideas.

Current Trends in Analysis, its Applications and Computation

Current Trends in Analysis, its Applications and Computation PDF Author: Paula Cerejeiras
Publisher: Springer Nature
ISBN: 3030875024
Category : Mathematics
Languages : en
Pages : 663

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Book Description
This volume contains the contributions of the participants of the 12th ISAAC congress which was held at the University of Aveiro, Portugal, from July 29 to August 3, 2019. These contributions originate from the following sessions: Applications of dynamical systems theory in biology, Complex Analysis and Partial Differential Equations, Complex Geometry, Complex Variables and Potential Theory, Constructive Methods in the Theory of Composite and Porous Media, Function Spaces and Applications, Generalized Functions and Applications, Geometric & Regularity Properties of Solutions to Elliptic and Parabolic PDEs, Geometries Defined by Differential Forms, Partial Differential Equations on Curved Spacetimes, Partial Differential Equations with Nonstandard Growth, Quaternionic and Clifford Analysis, Recent Progress in Evolution Equations, Wavelet theory and its Related Topics.

Spectral Theory of Non-Self-Adjoint Two-Point Differential Operators

Spectral Theory of Non-Self-Adjoint Two-Point Differential Operators PDF Author: John Locker
Publisher: American Mathematical Soc.
ISBN: 0821820494
Category : Nonselfadjoint operators
Languages : en
Pages : 266

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Book Description
Develops the spectral theory of an nth order non-self-adjoint two- point differential operator L in the complex Hilbert space L2[0,1]. The differential operator L is determined by an nth order formal differential l and by n linearly independent boundary values B1,.,Bn. Locker first lays the foundations of the spectral theory for closed linear operators and Fredholm operators in Hilbert spaces before developing the spectral theory of the differential operator L. The book is a sequel to Functional analysis and two-point differential operators, 1986. Annotation copyrighted by Book News, Inc., Portland, OR.

Geometric Aspects of Analysis and Mechanics

Geometric Aspects of Analysis and Mechanics PDF Author: Erik P. van den Ban
Publisher: Springer Science & Business Media
ISBN: 0817682449
Category : Mathematics
Languages : en
Pages : 372

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Book Description
Hans Duistermaat, an influential geometer-analyst, made substantial contributions to the theory of ordinary and partial differential equations, symplectic, differential, and algebraic geometry, minimal surfaces, semisimple Lie groups, mechanics, mathematical physics, and related fields. Written in his honor, the invited and refereed articles in this volume contain important new results as well as surveys in some of these areas, clearly demonstrating the impact of Duistermaat's research and, in addition, exhibiting interrelationships among many of the topics.

Singular Perturbations of Differential Operators

Singular Perturbations of Differential Operators PDF Author: Sergio Albeverio
Publisher: Cambridge University Press
ISBN: 9780521779128
Category : Mathematics
Languages : en
Pages : 454

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Book Description
Differential (and more general self-adjoint) operators involving singular interactions arise naturally in a range of topics such as, classical and quantum physics, chemistry, and electronics. This book presents a systematic mathematical study of these operators, with particular emphasis on spectral and scattering problems. Suitable for researchers in analysis or mathematical physics, this book could also be used as a text for an advanced course on the applications of analysis.

Further Progress in Analysis

Further Progress in Analysis PDF Author:
Publisher:
ISBN: 9814469114
Category :
Languages : en
Pages :

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Book Description


Further Progress in Analysis

Further Progress in Analysis PDF Author: A. Okay Celebi
Publisher: World Scientific
ISBN: 9812837337
Category : Mathematics
Languages : en
Pages : 877

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Book Description
The ISAAC (International Society for Analysis, its Applications and Computation) Congress, which has been held every second year since 1997, covers the major progress in analysis, applications and computation in recent years. In this proceedings volume, plenary lectures highlight the recent research results, while 17 sessions organized by well-known specialists reflect the state of the art of important subfields. This volume concentrates on partial differential equations, function spaces, operator theory, integral transforms and equations, potential theory, complex analysis and generalizations, inverse problems, functional differential and difference equations and integrable systems.

Algebraic Analysis of Differential Equations

Algebraic Analysis of Differential Equations PDF Author: T. Aoki
Publisher: Springer Science & Business Media
ISBN: 4431732403
Category : Mathematics
Languages : en
Pages : 354

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Book Description
This volume contains 23 articles on algebraic analysis of differential equations and related topics, most of which were presented as papers at the conference "Algebraic Analysis of Differential Equations – from Microlocal Analysis to Exponential Asymptotics" at Kyoto University in 2005. This volume is dedicated to Professor Takahiro Kawai, who is one of the creators of microlocal analysis and who introduced the technique of microlocal analysis into exponential asymptotics.

Existence and Regularity Properties of the Integrated Density of States of Random Schrödinger Operators

Existence and Regularity Properties of the Integrated Density of States of Random Schrödinger Operators PDF Author: Ivan Veselic
Publisher: Springer Science & Business Media
ISBN: 3540726896
Category : Mathematics
Languages : en
Pages : 151

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Book Description
This book describes in detail a quantity encoding spectral feature of random operators: the integrated density of states or spectral distribution function. It presents various approaches to the construction of the integrated density of states and the proof of its regularity properties. The book also includes references to and a discussion of other properties of the IDS as well as a variety of models beyond those treated in detail here.