Estimates and asymptotics for discrete spectra of integral and differential equations
Author(s)
Bibliographic Information
Estimates and asymptotics for discrete spectra of integral and differential equations
(Advances in Soviet mathematics, v. 7)
American Mathematical Society, c1991
Available at 26 libraries
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Library, Research Institute for Mathematical Sciences, Kyoto University数研
C||Estimates-191086575
Note
Includes bibliographical references
Description and Table of Contents
Description
The Leningrad Seminar on mathematical physics, begun in 1947 by V. I. Smirnov and now run by O. A. Ladyzhenskaya, is sponsored by Leningrad University and the Leningrad Branch of the Steklov Mathematical Institute of the Academy of Sciences of the USSR. The main topics of the seminar center on the theory of boundary value problems and related questions of analysis and mathematical physics. This volume contains adaptations of lectures presented at the seminar during the academic year 1989-1990. For the most part, the papers are devoted to investigations of the spectrum of the Schrodinger operator (or its generalizations) perturbed by some relatively compact operator.The book studies the discrete spectrum that emerges in the spectral gaps of the nonperturbed operator, and considers the corresponding estimates and asymptotic formulas for spectrum distribution functions in the large-coupling-constant limit. The starting point here is the opening paper, which is devoted to the important case of a semi-infinite gap. The book also covers the case of inner gaps, related questions in the theory of functions, and an integral equation with difference kernel on a finite interval. The collection concludes with a paper focusing on the classical problem of constructing scattering theory for the Schrodinger operator with potential decreasing faster than the Coulomb potential.
Table of Contents
Estimates for the number of negative eigenvalues of the Schrodinger operator and its generalizations by M. Sh. Birman and M. Z. Solomyak Discrete spectrum in the gaps of a continuous one for perturbations with large coupling constant by M. Sh. Birman Discrete spectrum in the gaps for perturbations of the magnetic Schrodinger operator by M. Sh. Birman and G. D. Raikov Boundedness conditions and spectrum estimates for the operators $b(X)a(D)$ and their analogs by M. Sh. Birman, G. E. Karadzhov, and M. Z. Solomyak Reflection operators and their applications to asymptotic investigations of semiclassical integral equations by A. M. Budylin and V. S. Buslaev Weyl asymptotics for the discrete spectrum of the perturbed Hill operator by A. V. Sobolev On solutions of the Schrodinger equation with radiation conditions at infinity by D. R. Yafaev.
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