Research Output per year

## Personal profile

### Research

Research on linear algebra, operator theory and systems and control theory.

Several current project are concerned with linear algebra in spaces with an indefinite inner product.

### Teaching

Teaching: Mathematical control and systems theory, linear algebra, and although it is not my expertise, I am teaching an Introduction to Financial Mathematics course.

### Ancillary activities

- Stichting Advancement of Mathematics | Amstelveen | Secretaris/ Penningmeester | 1996-02-01

*Ancillary activities are updated daily *

### Education / Academic qualification

Mathematics, Bachelor, Vrije Universiteit Amsterdam

Mathematics, Master, Vrije Universiteit Amsterdam

Mathematics, PhD, Vrije Universiteit Amsterdam

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Network
Recent external collaboration on country level. Dive into details by clicking on the dots.

## Research Output 1999 2017

## LOW RANK PERTURBATIONS OF QUATERNION MATRICES

Ran, A. & Mehl, C. 2017 In : Electronic Journal of Linear Algebra. 32, p. 514-530Research output: Scientific - peer-review › Article

## Wiener-Hopf indices of unitary functions on the unit circle in terms of realizations and related results on Toeplitz operators.

Ran, A., Kaashoek, M. A. & Groenewald, G. 2017 In : Indagationes Mathematicae. 28, 3, p. 649-710Research output: Scientific - peer-review › Article

## Eigenvalue perturbation theory of structured real matrices and their sign characteristics under generic structured rank-one perturbations.

Ran, A., Mehl, C., Mehrmann, V. & Rodman, L. 2016 In : Linear and Multilinear Algebra. 64, p. 527-556Research output: Scientific - peer-review › Article

## Generic rank-k perturbations of structured matrices.

Ran, A., Batzke, L., Mehl, C. & Rodman, L. 2016*Operator Theory, Function Spaces, and Applications, IWOTA 2014.*Birkhäuser, Vol. 255, p. 27-48 (Operator Theory Advances and Applications; vol. 255)

Research output: Scientific - peer-review › Chapter

## Aspects of Toeplitz operators and matrices: Asymptotics, norms, singular values

Rabe, H. 2015Research output: Scientific › PhD Thesis - Research VU, graduation VU