Spectral theory and differential operators

The Asymptotic Behavior for the Streaming Operator in Slab Geometry

Journal of Dynamical and Control Systems

A local Borg--Marchenko theorem for complex potentials

Journal of Computational and Applied Mathematics - On the occasion of the 65th birthday of Prof. Michael Eastham

Pattern formation below criticality forced by noise

Zeitschrift für Angewandte Mathematik und Physik (ZAMP)

Sectorial operators and normalized numerical range

Applied Numerical Mathematics

Continuity envelopes of spaces of generalised smoothness, entropy and approximation numbers

Journal of Approximation Theory

Approximation numbers in function spaces and the distribution of eigenvalues of some fractal elliptic operators

Journal of Approximation Theory

Analysis and numerics for a parabolic equation with impulsive forcing

Applied Numerical Mathematics

Relative form boundedness and compactness for a second-order differential operator

Journal of Computational and Applied Mathematics - Special issue: On the occasion of the eightieth birthday of prof. W.M. Everitt

Eigenvalue problems on exterior domains and Dirichlet to Neumann maps

Journal of Computational and Applied Mathematics - Special issue: On the occasion of the eightieth birthday of prof. W.M. Everitt

On approximation numbers of Sobolev embeddings of weighted function spaces

Journal of Approximation Theory

Geometric lower bounds for the spectrum of elliptic PDEs with Dirichlet conditions in part

Journal of Computational and Applied Mathematics - Special issue on 60th birthday of Prof. Brian Davies

Spectral problems on arbitrary open subsets of Rn involving the distance to the boundary

Journal of Computational and Applied Mathematics - Special issue on 60th birthday of Prof. Brian Davies

On the lowest eigenvalue of the Laplacian with Neumann boundary condition at a small obstacle

Journal of Computational and Applied Mathematics - Special issue on 60th birthday of Prof. Brian Davies

Spectral problems with mixed Dirichlet-Neumann boundary conditions: isospectrality and beyond

Journal of Computational and Applied Mathematics - Special issue on 60th birthday of Prof. Brian Davies

Computing the spectrum of non-self-adjoint Sturm-Liouville problems with parameter-dependent boundary conditions

Journal of Computational and Applied Mathematics

A Prüfer angle approach to singular Sturm-Liouville problems with Molčanov potentials

Journal of Computational and Applied Mathematics

Operators of Hardy type

Journal of Computational and Applied Mathematics

Besov spaces with positive smoothness on Rn, embeddings and growth envelopes

Journal of Approximation Theory

On approximation numbers of Sobolev embeddings of weighted function spaces

Journal of Approximation Theory

Full length article: Entropy and approximation numbers of limiting embeddings; an approach via Hardy inequalities and quadratic forms

Journal of Approximation Theory

A mathematical analysis of a model of structured population (II)

Journal of Dynamical and Control Systems

Classification of Non-symmetric Sturm-Liouville Systems and Operator Realizations

Acta Applicandae Mathematicae: an international survey journal on applying mathematics and mathematical applications