A Class of Matrix-Valued Schrödinger Operators with Prescribed Finite-Band Spectra

A class of pseudo-differential operators with oscillating symbols

A commutator method for the diagonalization of Hankel operators

A constructive version of the Boyle-Handelman theorem on the spectra of nonnegative matrices

A Criterion for Hill Operators to be Spectral Operators of Scalar Type

A Dirichlet-to-Neumann approach for the exact computation of guided modes in photonic crystal waveguides

A family of Schrödinger operators whose spectrum is an interval

A Formula representing magnetic Berezin transforms on the Bergman ball of $\C^n$ as functions of the Laplace-Beltrami operator

A Fulling-Kuchment theorem for the 1D harmonic oscillator

A functional model, eigenvalues, and finite singular critical points for indefinite Sturm-Liouville operators

A gap in the continuous spectrum of a cylindrical waveguide with a periodic perturbation of the surface

A gap in the spectrum of the Neumann-Laplacian on a periodic waveguide

A general realization theorem for matrix-valued Herglotz-Nevanlinna functions

A Generalization of a Levitin and Parnovski Universal Inequality for Eigenvalues

A generalization of the $tan 2Θ$ Theorem

A generalized virial theorem and the balance of kinetic and potential energies in the semiclassical limit

A gluing formula for the analytic torsion on singular spaces

A Haar-type Approximation and a New Numerical Schema for the Korteweg-de Vries Equation

A Hierarchical Method for obtaining Eigenvalue Enclusures

A highly accurate method of absolute calibration of photoelectric apparatus in a wide spectral region