On Weyl-Titchmarsh Theory for Singular Finite Difference Hamiltonian Systems

Operator integrals with respect to a spectral measure and solutions to some operator equations

Operator interpretation of resonances generated by some operator matrices

Operator theoretic methods for the eigenvalue counting function in spectral gaps

Operators Similar to Contractions and Their Similarity to a Normal Operator

Operators with smooth functional calculi

Optimal lower bound of the resonance widths for a Helmhotz tube-shaped resonator

Optimal Wegner estimates for random Schroedinger operators on metric graphs

Optimality of log Hölder continuity of the integrated density of states

Optimization of quasi-normal eigenvalues for 1-D wave equations in inhomogeneous media; description of optimal structures

OPUC on One Foot

Orbifold Lens Spaces that are Isospectral but not Isometric

Orthogonal polynomials on the unit circle with Verblunsky coefficients defined by the skew-shift

Orthogonal polynomials on the unit circle: New results

Orthogonal polynomials with exponentially decaying recursion coefficients

Orthogonal Polynomials with Recursion Coefficients of Generalized Bounded Variation

p-forms on d-spherical tessellations

Paley-Wiener description of K-spherical Besov spaces on the Heisenberg group

Parametrization of spectral surfaces of a class of periodic 5-diagonal matrices

Parametrization of the isospectral set for the vector-valued Sturm-Liouville problem