On an Inclusion of the Essential Spectrum of Laplacians under Non-Compact Change of Metric
On an inverse problem for finite-difference operators of second order
On Approximation of the Eigenvalues of Perturbed Periodic Schrodinger Operators
On Asymptotic Expansions and Scales of Spectral Universality in Band Random Matrix Ensembles
On Asymptotics of Polynomial Eigenfunctions for Exactly-Solvable Differential Operators
On Bochner-Krall orthogonal polynomial systems
On Cayley Identity for Self-Adjoint Operators in Hilbert Spaces
On commutative subalgebras of the Weyl algebra that are related to commuting operators of arbitrary rank and genus
On condition numbers of polynomial eigenvalue problems with nonsingular leading coefficients
On Dirichlet-to-Neumann Maps and Some Applications to Modified Fredholm Determinants
On Dirichlet-to-Neumann Maps, Nonlocal Interactions, and Some Applications to Fredholm Determinants
On eigenfunction approximations for typical non-self-adjoint Schroedinger operators
On eigenvalue and eigenvector estimates for nonnegative definite operators
On Explicit Recursive Formulas in the Spectral Perturbation Analysis of a Jordan Block
On exponential decay rate of semigroup associated with second order linear differential equation in Hilbert space with strong damping operator
On Factorization of a Perturbation of a J-selfadjoint Operator Arising in Fluid Dynamics
On finiteness of the sum of negative eigenvalues of Schroedinger operators
On generalized sum rules for Jacobi matrices
On Harrell-Stubbe Type Inequalities for the Discrete Spectrum of a Self-Adjoint Operator
On isospectral arithmetical spaces