8th Workshop Operator Theory

TU Berlin, December 18-21, 2008

List of abstracts

 


  1. N.L. Abasheeva Some inverse problems for operator-differential equations of mixed type
  2. V. Adamyan Stability of contractive lines in Hilbert space
  3. D. Alpay Linear systems: a white noise approach
  4. Yu. Arlinskii Conservative discrete time-invariant systems and block operator CMV matrices
  5. T. Azizov Quadratic (weakly) hyperbolic matrix polynomials: Inverse spectral problems
  6. M. Bakonyi Semidefinite programming and indefinite moment problems on the unit circle
  7. J. Brasche Large coupling convergence
  8. B.M. Brown Inverse spectral and scattering theory for the half-line left-definite Sturm-Liouville problem
  9. A. Burchard On computing the instability index of a non-selfadjoint differential operator associated with coating and rimming flows
  10. M. Denisov Invariant subspaces of J-dissipative operators in $\Pi_{\kappa}$ and zeros of holomorphic functions
  11. M. Derevyagin On the uniform convergence of diagonal Pad\'e approximants
  12. V. Derkach On linear fractional transformations associated with generalized J-inner matrix functions
  13. A. Dijksma Quadratic (weakly) hyperbolic matrix polynomials: Direct spectral problems
  14. M. Dritschel Completely bounded kernels
  15. A. Fleige Sesquilinear forms corresponding to a non-semibounded Sturm-Liouville operator
  16. A. Gheondea Closed embeddings of Hilbert and Krein Spaces
  17. K. Günther The punctured neighborhood theorem for the complex interpolation method
  18. U. Günther Two models of Krein-space related physics: the MHD $\alpha^2$-dynamo and the PT-symmetric Bose-Hubbard model
  19. S. Hassi Spectral properties of selfadjoint exit space extensions via Weyl functions
  20. R. Hryniv Inverse scattering on the line for Schrödinger operators with Miura potentials
  21. M. Karow A max-min-principle for pairs of Hermitian matrices
  22. Q. Katatbeh Non-Real Eigenvalues of Singular Indefinite Sturm-Liouville Operators
  23. O.N. Kirillov Determining role of Krein signature for 3D Arnold tongues of oscillatory dynamos
  24. E. Korotyaev Inverse resonance scattering for Jacobi operators
  25. P. Kurasov Inverse Problems for Graphs with Cycles
  26. M. Kurula On interconnection of conservative systems
  27. A. Kutsenko Nanoribbons in external electric fields
  28. S. Kuzhel J-self-adjoint operators with C-symmetries: extension theory approach}
  29. J.-P. Labrousse The Spectra of normal, equinormal and pseudonormal closed linear relations
  30. H. Langer Self-adjoint analytic operator functions: Local spectral function and inner linearization
  31. M. Langer Dependence of the Titchmarsh--Weyl coefficient on singular interface conditions
  32. E. Lopushanskaya Schur algorithm for generalized Caratheodory functions
  33. V. Lotoreichik Estimate of essential spectrum of Schrädinger operator with $\delta'$ perturbation supported by an asymptotically straight curve
  34. A. Luger On the number of negative eigenvalues of quantum graphs
  35. M. Malamud Elliptic boundary value problems and the extension theory
  36. V. Matsaev The spectra of the product and the factors
  37. C. Mehl Sesquilinear versus bilinear - what is the real scalar product?
  38. V. Mehrmann Structured matrix polynomials in indefinite scalar product spaces
  39. R. Möws Eigenvalues in spectral gaps of J-selfadjoint operators and indefinite Sturm-Liouville operators
  40. A.K. Motovilov Sharp norm bounds on variation of spectral subspaces under J-self-adjoint perturbations
  41. M.M. Nafalska Characterization of extremal extensions
  42. H. Neidhardt On the unitary equivalence of absolutely continuous parts of self-adjoint extensions
  43. K. Pankrashkin Semiclassical reduction for magnetic Schroedinger operator with periodic zero-range potentials
  44. F. Philipp Finite rank perturbations of J-selfadjoint operators and indefinite Sturm-Liouville problems
  45. V. Pivovarchik Scattering in a forked-shaped waveguide
  46. O. Post On boundary triples associated to quadratic forms
  47. S.G. Pyatkov Interpolation of Sobolev spaces and indefinite elliptic eigenvalue problems
  48. A. Ran Analysis of spectral points of the operators $T^{[*]} T$ and $TT^{[*]} $ in a Krein space
  49. N. Rozhenko Dilations and passive impedance optimal realizations of Caratheodory class operator-valued functions
  50. A. Sandovici Spectral analysis of linear relations using Ascent, Descent, Nullity and Defect
  51. A.M. Savchuk Properties of nonlinear maps associated with inverse Sturm-Liouville problems
  52. I.A. Sheipak On the spectrum of the Jacobi operator with exponentially increasing matrix elements
  53. A.A. Shkalikov Symmetric Operator Matrices. Extensions and Spectral Decompositions
  54. H. de Snoo Boundary relations and Dirac systems
  55. O.J. Staffans How to complete a maximal nonnegative subspace of a Krein space?
  56. V. Strauss On factorization of a J-selfadjoint operator arising in fluid dynamics
  57. F.H. Szafraniec Dissymmetrising inner product spaces
  58. S. Torba p-Adic Schrödinger-type operator with point interactions
  59. C. Tretter Quadratic numerical range of analytic block operator matrix functions
  60. C. Trunk On PT symmetric operators
  61. K. Veselic Modal approximation to damped second order systems
  62. G. Wanjala On invariant subspaces of absolutely summing operators
  63. M. Wojtylak Shift operators as fundamental symmetries of a Pontryagin spaces
  64. I. Wood M-functions for closed extensions of adjoint pairs of operators
  65. C. Wyss Neutral invariant subspaces of Hamiltonian operators