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 - present

*Ancillary activities are updated daily*

### Education/Academic qualification

Mathematics, PhD, Vrije Universiteit Amsterdam

Mathematics, Master, Vrije Universiteit Amsterdam

Mathematics, Bachelor, Vrije Universiteit Amsterdam

## Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

##
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## Research Output 1999 2018

## A note on inner-outer factorization of wide matrix-valued functions

Frazho, A. E. & Ran, A. C. M., 2018,*Operator Theory, Advances and Applications: In Honor of Rien Kaashoek.*Springer International Publishing Switzerland, p. 201-214 14 p. (Operator Theory: Advances and Applications; vol. 271).

Research output: Chapter in Book / Report / Conference proceeding › Chapter › Academic › peer-review

## A toeplitz-like operator with rational symbol having poles on the unit circle i: Fredholm properties

Groenewald, G. J., ter Horst, S., Jaftha, J. & Ran, A. C. M., 2018,*Operator Theory, Advances and Applications: In Honor of Rien Kaashoek.*Springer International Publishing Switzerland, p. 239-268 30 p. (Operator Theory: Advances and Applications; vol. 271).

Research output: Chapter in Book / Report / Conference proceeding › Chapter › Academic › peer-review

## Canonical form for H-symplectic matrices

Groenewald, G. J., Janse van Rensburg, D. B. & Ran, A. C. M., 2018,*Operator Theory, Advances and Applications: In Honor of Rien Kaashoek.*Springer International Publishing Switzerland, p. 269-290 22 p. (Operator Theory: Advances and Applications; vol. 271).

Research output: Chapter in Book / Report / Conference proceeding › Chapter › Academic › peer-review

## Equivalence after extension and Schur coupling coincide for inessential operators

ter Horst, S., Messerschmidt, M., Ran, A. C. M., Roelands, M. & Wortel, M., Oct 2018, In : Indagationes Mathematicae. 29, 5, p. 1350-1361 12 p.Research output: Contribution to Journal › Article › Academic › peer-review

## Preface

Bart, H., Ter Horst, S., Ran, A. C. M. & Woerdeman, H. J., 2018,*Operator Theory, Advances and the State Space Approach: In Honor of Rien Kaashoek.*Vol. 271. p. v-v 1 p. (Operator Theory: Advances and Applications; vol. 271).

Research output: Chapter in Book / Report / Conference proceeding › Foreword/postscript › Academic

## Activities 1999 2011

## North-West University, Private Bag X6001, Potchefstroom 2520, Zuid Afrika (External organisation)

A.C.M. Ran (Member)Activity: Membership › Academic

## Generalized Bezoutians in the theory of algebraic Riccati equations.

A.C.M. Ran (Speaker)Activity: Lecture / Presentation › Academic

## Polar Decomposition in Indefinite Inner Product Spaces.

A.C.M. Ran (Speaker)Activity: Lecture / Presentation › Academic

## SIAM Journal on Matirix Analysis and Applications (External organisation)

A.C.M. Ran (Member)Activity: Membership › Academic

## Symmetric factorizations of selfadjoint rational matrix functions.

A.C.M. Ran (Speaker)Activity: Lecture / Presentation › Academic