Download or read book On the Distribution of Eigenvalues of Non selfadjoint Operators written by M. Hansmann and published by . This book was released on 2008 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non Self Adjoint Differential Operators Spectral Asymptotics and Random Perturbations written by Johannes Sjöstrand and published by Springer. This book was released on 2019-05-17 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Angular Distribution of Eigenvalues of Non Self adjoint Elliptic Boundary Value Problems of Higher Order written by Shmuel Agmon and published by . This book was released on 1960 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compact Non self adjoint Operators written by John R. Ringrose and published by . This book was released on 1971 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectral Properties of Non self adjoint Operators written by John L. Weir and published by . This book was released on 2010 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this thesis is to study the spectral properties of non-self-adjoint operators via related self-adjoint operators. We consider two different prob-lems: one in which the spectra of a family of non-self-adjoint operators are identical to those of a family of self-adjoint operators and one in which the growth rates of semigroups generated by non-self-adjoint operators are bounded by the growth rates of semigroups generated by related self-adjoint operators. -- In the first problem, we consider a family of non-self-adjoint operators arising in the study of a problem in fluid mechanics in a paper written by Benilov, O'Brien and Sazonov, who argued from numerical and asymptotic evidence that the spectra of the operators are real. We show that the spectra of the operators are identical to the spectra of a family of self-adjoint operators and consist of infinitely many real eigenvalues which accumulate only at infinity. We make use of this correspondence to study certain other properties of the eigenvalues of the non-self-adjoint operators via the self-adjoint operators. In particular, we consider the asymptotic distribution of the eigenvalues for each fixed operator, and the behaviour of each eigenvalue as a small parameter tends to zero. -- In the second, we study the spectral asymptotics of large skew symmetric perturbations of a wide class of Schrodinger operators, generalizing some of the results obtained by Gallagher, Gallay and Nier for the one-dimensional quantum harmonic oscillator. We obtain bounds on the growth rates of the one-parameter semigroups generated by the perturbed operators in terms of the minima of the spectra of related self-adjoint operators. These self-adjoint operators are perturbations of the original Schrodinger operators by non-negative potentials, and we obtain lower bounds on the spectral minima in terms of the behaviour of the potentials at their zeros.
Download or read book Inequalities for Eigenvalues of Self adjoint Operators written by Stephen Matthew Hook and published by . This book was released on 1986 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Method for Approximating the Eigenvalues of Non Self adjoint Ordinary Differential Operators written by John E. Osborn and published by . This book was released on 1979 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Approximation of the Eigenvalues of Non Self adjoint Operators written by John Edward Osborn and published by . This book was released on 1965 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Asymptotic Distribution of Eigenvalues of Partial Differential Operators written by Yu Safarov and published by American Mathematical Soc.. This book was released on 1997 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work studies the eigenvalues of elliptic linear boundary value problems. Its main content is a set of asymptotic formulas describing the distribution of eigenvalues with high sequential numbers, providing a basic introduction to mathematical concepts and tools.
Download or read book Linear and Complex Analysis written by Alexei Alexandrov and published by American Mathematical Soc.. This book was released on with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Further Progress in Analysis written by A. Okay Celebi and published by World Scientific. This book was released on 2009 with total page 877 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Mathematical Physics Spectral Theory and Stochastic Analysis written by Michael Demuth and published by Springer Science & Business Media. This book was released on 2014-07-08 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents self-contained survey articles on modern research areas written by experts in their fields. The topics are located at the interface of spectral theory, theory of partial differential operators, stochastic analysis, and mathematical physics. The articles are accessible to graduate students and researches from other fields of mathematics or physics while also being of value to experts, as they report on the state of the art in the respective fields.
Download or read book Non Self Adjoint Boundary Eigenvalue Problems written by R. Mennicken and published by Gulf Professional Publishing. This book was released on 2003-06-26 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 'North-Holland Mathematics Studies' series comprises a set of cutting-edge monographs and studies. This volume explores non-self-adjoint boundary eigenvalue problems for first order systems of ordinary differential equations and n-th order scalar differential equations.
Download or read book Operator Theory and Boundary Eigenvalue Problems written by I. Gohberg and published by Birkhäuser. This book was released on 2012-12-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Workshop on Operator Theory and Boundary Eigenvalue Problems was held at the Technical University, Vienna, Austria, July 27 to 30, 1993. It was the seventh workshop in the series of IWOTA (International Workshops on Operator Theory and Applications). The main topics at the workshop were interpolation problems and analytic matrix functions, operator theory in spaces with indefinite scalar products, boundary value problems for differential and functional-differential equations and systems theory and control. The workshop covered different aspects, starting with abstract operator theory up to contrete applications. The papers in these proceedings provide an accurate cross section of the lectures presented at the workshop. This book will be of interest to a wide group of pure and applied mathematicians.
Download or read book Eigenvalue Distribution of Compact Operators written by H. König and published by Birkhäuser. This book was released on 2013-11-22 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bounds for the Eigenvalues of Non selfadjoint Differential Operators written by J. D. P. Donnelly and published by . This book was released on 1972 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A generalization of the Gerschgorin circle theorem is applied to an infinite matrix representation of a differential operator to obtain bounds for its eigenvalues. (Author).
Download or read book KWIC Index for Numerical Algebra written by Alston Scott Householder and published by . This book was released on 1972 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
