invited plenary presentations

On best approximation by polynomials of matrices , Householder Symposium XVIII, Granlibakken, USA (June 12-17, 2011).

  contributed presentations

On efficient numerical approximation of the bilinear form c^*A^-1b,, 16th Conference of the International Linear Algebra Society ILAS 2010, Pisa, Italy (June 21-25, 2010).

On Chebyshev Polynomials of Matrices, Applied Linear Algebra, In Honor of Hans Schneider, Novi Sad, Serbia (May 24-28, 2010).

On efficient numerical approximation of the scattering amplitude,, SIAM Conference on Applied Linear Algebra, Monterey, USA (October 26-29, 2009).

On efficient numerical approximation of the scattering amplitude, Modelling 2009, Roznov pod Radhostem, Czech Republic (June 22-26, 2009).

On short recurrences for generating orthogonal Krylov subspace bases,, ALGORITMY 2009 - Conference on Scientific Computing, Vysoke Tatry - Podbanske, Slovakia (March 15-20, 2009).

On best approximations of matrix polynomials , GAMM Workshop on Applied and Numerical Linear Algebra, Hamburg, Germany (September 11-12, 2008).

On a New Proof of the Faber-Manteuffel Theorem, Householder Symposium XVII, Zeuthen, Germany (June 1-6, 2008).

On a New Proof of the Faber-Manteuffel Theorem, Applied Linear Algebra, In Honor of Ivo Marek, Novi Sad, Serbia (April 28-30, 2008).

On Ideal and Worst-case GMRES, 22nd Biennial Conference on Numerical Analysis, University of Dundee, Scotland, United Kingdom of Great Britain and Northern Ireland (June 26-29, 2007).

Ideal GMRES and polynomial numerical hull for a Jordan block, GAMM-SIAM conference on Applied Linear Algebra, Düsseldorf, Germany (July 24-27, 2006).

Ideal GMRES and polynomial numerical hull for a Jordan block, GAMM Jahrestagung 2006, Berlin, Germany (March 27-31, 2006).

Worst-case and Ideal GMRES for a Jordan Block, Householder Meeting on Numerical Linear Algebra XVI, Seven Springs Mountain Resort, Champion, Pennsylvania, USA (May 23-27, 2005).

Efficient Estimation of the A-norm of the Error in PCG, International Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications, Emory University, Atlanta, Georgia, USA (May 19-21, 2005).

On the next-to-last CG and MR iteration step, GAMM Jahrestagung 2005, Luxembourg, Germany (March 28 - April 1, 2005).

On the next-to-last CG and MR iteration step, ALGORITMY 2005 - Conference on Scientific Computing, Vysoke Tatry - Podbanske, Slovakia (March 13-18, 2005).

The worst-case GMRES for normal matrices , Iterative methods, preconditioning and numerical PDEs (IMET 2004), Prague, Czech Republic (May 25-28, 2004).

The worst-case GMRES for normal matrices , GAMM Jahrestagung 2004, Dresden, Germany (March 21-26, 2004).

On estimating the A-norm of the error in CG and PCG, Workshop Numerical linear algebra and its applications, Monopoli, Bari, Italy (September 22-24, 2003).

On the error estimation in CG and PCG, GAMM Jahrestagung 2003, Abano Terme, Italy (March 24-28, 2003).

  presentations at seminars and schools

On Chebyshev Polynomials of Matrices, Programy a algoritmy numerické matematiky 15, PANM 15, Dolni Maxov, Czech Republic (June 06-11, 2010).

On efficient numerical approximation of the scattering amplitude, Seminar on Numerical Analysis (SNA) 2010, Nove Hrady, Czech Republic (January 18 - 22, 2010).

On best approximations of matrix polynomials , Seminar on Numerical Analysis (SNA) 2009, Ostrava, Czech Republic (February 2-6, 2009).

On short recurrences for generating orthogonal Krylov subspace bases, Seminar on Numerical Analysis (SNA) 2008, Liberec, Czech Republic (January 28 - February 1, 2008).

On ideal GMRES for a Jordan Block , Seminar on Numerical Analysis (SNA) 2005, Ostrava, Czech Republic (February 7-11, 2005).

The shadow vector in the Lanczos Method, XVIIth summer school software and algorithms of numerical math., Nečtiny (1999).

  other presentations

Übersicht zur Numerik II für Ingenieure, (in German), a presentation to the lecture: Numerik II for engineers, TU-Berlin, Germany (2004).

Untraditional derivation of BCG, Czech-US Workshop on Iterative Methods and Parallel Computing, MILOVY (1997), poster 3 p.