# Talks

2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2003 | 2002 | 2000 | 1999 | 1998 | 1997 | 1996

## 2016

16th GAMM Workshop Applied and Numerical Linear Algebra
Hamburg University of Technology, Hamburg (local organizer), November 15-16, 2016

Flugzeuge und Matrizen
Talk with Dr. Joseph Gross, Hamburg University of Technology, Hamburg, May 25, 2016

## 2015

Die Matrix hat Dich...

Folge dem weißen Kaninchen. Public presentation at the "Nacht des Wissens", Hamburg University of Technology, November 7, 2015

Folge dem weißen Kaninchen. Public presentation at the "Nacht des Wissens", Hamburg University of Technology, November 7, 2015

## 2014

Sonneveld Methods: Lost Relatives (invited speaker)

Snapshots of Numerical Analysis, 3.10.2014 - A Conference Celebrating Martin Gutknecht's 70th Birthday Lausanne, Switzerland, October 3rd, 2014

Snapshots of Numerical Analysis, 3.10.2014 - A Conference Celebrating Martin Gutknecht's 70th Birthday Lausanne, Switzerland, October 3rd, 2014

Augmented Analysis of Lanczos Tridiagonalization

Joint ALAMA-GAMM/ANLA Meeting 2014 Barcelona, Spain, July 14-16, 2014

Joint ALAMA-GAMM/ANLA Meeting 2014 Barcelona, Spain, July 14-16, 2014

On Structured Pencils arising in Sonneveld Methods

10th International Workshop on Accurate Solution of Eigenvalue Problems Dubrovnik, Croatia, June 2-5, 2014

10th International Workshop on Accurate Solution of Eigenvalue Problems Dubrovnik, Croatia, June 2-5, 2014

## 2013

Eigenvector Computations based on IDR

GAMM Workshop on Applied and Numerical Linear Algebra Wuppertal, Germany, September 9-10, 2013

GAMM Workshop on Applied and Numerical Linear Algebra Wuppertal, Germany, September 9-10, 2013

## 2012

Applied Krylov subspace methods

Kickoff meeting of the Institute of Mathematics, TUHH July 17-18, 2012

Kickoff meeting of the Institute of Mathematics, TUHH July 17-18, 2012

## 2011

IDR versus other Krylov subspace solvers

RIMS workshop "The latest developments in theory and application on scientific computation" at the Research Institute for Mathematical Sciences, Kyoto University, October 25-27, 2011, Kyoto, Japan

RIMS workshop "The latest developments in theory and application on scientific computation" at the Research Institute for Mathematical Sciences, Kyoto University, October 25-27, 2011, Kyoto, Japan

Tuning IDR to fit your applications

Int. Workshop on application of iterative methods to engineering and its mathematical element at Doshisha University, October 23-24, 2011, Kyoto, Japan

Int. Workshop on application of iterative methods to engineering and its mathematical element at Doshisha University, October 23-24, 2011, Kyoto, Japan

IDR: A new generation of Krylov subspace methods?

ILAS 2011, the 17th ILAS Conference "Pure and Applied Linear Algebra: The new Generation" TU Braunschweig, August 22 to August 26, 2011

ILAS 2011, the 17th ILAS Conference "Pure and Applied Linear Algebra: The new Generation" TU Braunschweig, August 22 to August 26, 2011

A quick and dirty introduction to IDR
Visiting Ivo Panayotov at the Mathematical Institute of the University of Oxford (Talk at the Computational Mathematics and Applications Seminar, May 26th) and Melina Freitag at the Department of Mathematical Sciences of the University of Bath (Talk at the Bath Numerical Analysis Seminar, May 27th)

## 2010

Collatz-Woche, Festveranstaltung der Universität Hamburg zum 100. Geburtstag von Lothar Collatz
4. Oktober - 8. Oktober 2010, Hamburg, Germany

Relations between Rayleigh Quotient Iteration and the Opitz-Larkin Method

IWASEP 8, 8th International Workshop on Accurate Solution of Eigenvalue Problems June 28 - July 1, 2010, Berlin, Germany

IWASEP 8, 8th International Workshop on Accurate Solution of Eigenvalue Problems June 28 - July 1, 2010, Berlin, Germany

Relations between Rayleigh Quotient Iteration and Classical Root Finding Algorithms
Visiting Gerard Sleijpen at Universiteit Utrecht, March 1-6, 2010 / Talk at the Universiteit Utrecht, 11:00-12:00, March 3rd, 2010

IDR(s) and IDR(s)Eig in Parallel Computing

and

On the behavior of IDR(s) algorithms in finite precision Visiting Prof. Seiji Fujino at Kyushu University in Japan, February 8-14, 2010 / Talk at Kyushu University in the frame of the 249th Numerical Analysis Seminar (Q-NA), February 9th, 2010 (handout), and talk at the University of Tokyo in the frame of the 6th ASE (the association of Advanced Supercomputing Environment) Seminar, February 12th, 2010

and

On the behavior of IDR(s) algorithms in finite precision Visiting Prof. Seiji Fujino at Kyushu University in Japan, February 8-14, 2010 / Talk at Kyushu University in the frame of the 249th Numerical Analysis Seminar (Q-NA), February 9th, 2010 (handout), and talk at the University of Tokyo in the frame of the 6th ASE (the association of Advanced Supercomputing Environment) Seminar, February 12th, 2010

## 2009

On the genealogy of the IDR family
Visiting TU Bergakademie Freiberg between December 16th and 20th / Talk at the Seminar Numerik, 17th of December, 2009, 16:30, Freiberg, Germany

Eigenvalue Perspectives of the IDR Family

SIAM Conference on Applied Linear Algebra October 26-29, 2009, Monterey Bay-Seaside, California, USA

SIAM Conference on Applied Linear Algebra October 26-29, 2009, Monterey Bay-Seaside, California, USA

Towards a deeper understanding of Chris Paige's error analysis of the finite precision Lanczos process
Visiting Prague between September 21st and September 25th / Talk at ICS of CAS, 24.09.2009

Visiting ETH Zurich between September 14th and September 16th

Lectures on Numerical Linear Algebra in Computational Science and Engineering
September 12th, 2009, ETH Zurich, Switzerland

IDR(s)ORes and eigenvalue computations

9th GAMM Workshop Applied and Numerical Linear Algebra with special emphasis on Preconditioning September 10-11, 2009, ETH Zurich, Switzerland

9th GAMM Workshop Applied and Numerical Linear Algebra with special emphasis on Preconditioning September 10-11, 2009, ETH Zurich, Switzerland

IDR(s): Finite precision aspects

Special afternoon session after the DCSE symposium on IDR and block Lanczos lvers for large nonsymmetric systems June 3, 2009, TU Delft, Netherlands

Special afternoon session after the DCSE symposium on IDR and block Lanczos lvers for large nonsymmetric systems June 3, 2009, TU Delft, Netherlands

## 2008

8th GAMM Workshop Applied and Numerical Lineare Algebra with special emphasis on Regularization of Ill-posed Problems
September 11-12, 2008, Technische Universität Hamburg-Harburg (local organizer)

Quasi-Minimal Residual Eigenpairs

IWASEP 7, 7th International Workshop on Accurate Solution of Eigenvalue Problems June 9-12, 2008, Dubrovnik, Croatia

IWASEP 7, 7th International Workshop on Accurate Solution of Eigenvalue Problems June 9-12, 2008, Dubrovnik, Croatia

Quasi-Minimal-Residual Eigenpairs

GAMM Annual Meeting 2008, Section 17: Applied and numerical linear algebra March 31 - April 4, 2008, Universität Bremen

GAMM Annual Meeting 2008, Section 17: Applied and numerical linear algebra March 31 - April 4, 2008, Universität Bremen

## 2007

Eigenpair Extraction Using Krylov Subspaces

Harrachov 2007, Computational Methods with Applications August 19 - 25, 2007, Harrachov, Czech Republic

Harrachov 2007, Computational Methods with Applications August 19 - 25, 2007, Harrachov, Czech Republic

## 2006

Abstract Perturbed Krylov Methods

GAMM Annual Meeting 2006, Section 17: Applied and numerical linear algebra March 27 - 31, 2006, Technische Universität Berlin

GAMM Annual Meeting 2006, Section 17: Applied and numerical linear algebra March 27 - 31, 2006, Technische Universität Berlin

## 2005

Abstract Perturbed Krylov Methods: Just another point of view?
Visiting Prague between March 5th and March 12th / Talk at ICS ofAS, 08.03.2005

## 2004

Hessenberg Eigenvalue-Eigenmatrix Relations

25. Norddeutsches Kolloquium über Angewandte Analysis und Numerische Mathematik Universität Hamburg, 14. - 15. Mai 2004

25. Norddeutsches Kolloquium über Angewandte Analysis und Numerische Mathematik Universität Hamburg, 14. - 15. Mai 2004

Schemes for multidimensional wave structures in hyperbolic systems
March 1 - 4, 2004, TUHH (local organizer)

## 2003

Krylov Subspace Methods: Characteristic Properties Inherited in Finite Precision

Theoretical and Computational Aspects of Matrix Algorithms Dagstuhl Seminar No. 03421, October 12-17, 2003, Dagstuhl

Theoretical and Computational Aspects of Matrix Algorithms Dagstuhl Seminar No. 03421, October 12-17, 2003, Dagstuhl

(Q)OR Krylov Methods in Finite Precision: Inherent Characteristics

GAMM Workshop Applied and Numerical Linear Algebra with special emphasis on Applications in Medicine and Biology September 12-13, 2003, Technische Universität Braunschweig, Germany

GAMM Workshop Applied and Numerical Linear Algebra with special emphasis on Applications in Medicine and Biology September 12-13, 2003, Technische Universität Braunschweig, Germany

(Q)OR Methods in Finite Precision: Inherent Characteristics

Kolloquium über Numerical Linear Algebra TUHH, 7. Juli 2003

Kolloquium über Numerical Linear Algebra TUHH, 7. Juli 2003

## 2002

Hessenberg Eigenvalue - Eigenvector Relations and their Application to the Error Analysis of Finite Precision Krylov Subspace Methods

GAMM Workshop Numerical Linear Algebra with special emphasis on Multilevel and Krylov Subspace Methods September 13-14, 2002, University of Bielefeld, Germany

GAMM Workshop Numerical Linear Algebra with special emphasis on Multilevel and Krylov Subspace Methods September 13-14, 2002, University of Bielefeld, Germany

Finite Precision Krylov Methods in a Nutshell

Milovy 2002, Computational Linear Algebra with Applications August 4-10, 2002, Milovy, Czech Republic

Milovy 2002, Computational Linear Algebra with Applications August 4-10, 2002, Milovy, Czech Republic

Hessenberg eigenvalue - eigenvector relations and their application to the error analysis of finite precision Krylov subspace methods

Kolloquium über Numerical Linear Algebra TUHH, 10. Juli 2002

Kolloquium über Numerical Linear Algebra TUHH, 10. Juli 2002

Finite Precision Krylov Methods: Where are the Frontiers?
Visiting Prague between May 29th and June 2nd / Talk at ICS of CAS, 28.05.2002

## 2000

Internationales Kolloquium über Anwendungen der Mathematik
September 29-30, 2000, Universität Hamburg, Germany

Fast Numerical Verification in MATLAB

16th IMACS World Congress 2000 on Scientific Computation, Applied Mathematics and Simulation, Session 121: Computer Arithmetic and Validated Numerics August 21-25, 2000, EPFL, Lausanne

16th IMACS World Congress 2000 on Scientific Computation, Applied Mathematics and Simulation, Session 121: Computer Arithmetic and Validated Numerics August 21-25, 2000, EPFL, Lausanne

III International Workshop on Accurate Solution of Eigenvalue Problems
July 3-6, 2000, Arcadeon Conference Center, Hagen, Germany

## 1999

How Orthogonality is Lost in Krylov Methods

Symbolic-algebraic Methods and Verification Methods - Theory and Applications Dagstuhl Seminar No. 99471, November 21-26, 1999, Dagstuhl

Symbolic-algebraic Methods and Verification Methods - Theory and Applications Dagstuhl Seminar No. 99471, November 21-26, 1999, Dagstuhl

The Behaviour of the Finite Precision Lanczos Algorithm

Computation and Analytic Problems in Spectral Theory Workshop, July 11-16, 1999, Gregynog

Computation and Analytic Problems in Spectral Theory Workshop, July 11-16, 1999, Gregynog

Workshop on Applied Linear Algebra in honor of Ludwig Elsner
January 21-23, 1999, Bielefeld

## 1998

Error Control and Adaptivity in Scientific Computing
International Advanced Study Institute, August 9-21, 1998, Antalya (Turkey)

GAMM-Jahrestagung 1998
6. - 9. April 1998, Bremen

## 1997

Harburger Sommerschulen 1997
Nichtlineare Gleichungssysteme, 17. - 21. März 1997

Parallele Algorithmen und Rechnerarchitekturen, 3. - 7. März

Numerische Lösung gewöhnlicher Differentialgleichungen, 24. - 28. Februar 1997

Parallele Algorithmen und Rechnerarchitekturen, 3. - 7. März

Numerische Lösung gewöhnlicher Differentialgleichungen, 24. - 28. Februar 1997

## 1996

Symmetriegruppen und Differentialgleichungen
Kompaktseminar, 15. - 20. September 1996, Wuppertal