Krystyna Ziętak: about me

Wroclaw University of Technology
Faculty of Fundamental Problems of Technology
Department of Computer Science (W11/K2)
Building D1, room 213
Wroclaw, Poland

Email: krystyna.zietak@pwr.edu.pl
Email (private): k.zietak@gmail.com
Phone: +48 (71) 320 3067

Work experience

• 1966 - 2001 University of Wroclaw
  
• 1996 - 1999 Vice-Director for Research, Institute of Computer Science, University of Wroclaw
  
• 1992 - 1996, 1999 - 2001 Head of Division of Numerical Methods, Institute of Computer Science, University of Wroclaw
  
• 2001 - 2013 Wroclaw University of Technology
  
• 2013 - professor emeritus

Ph.D. Thesis: "Rational functions in the alternating direction method"
(University of Wroclaw)

Habilitation: "Approximation of matrices and matrix equations"
(University of Wroclaw)

Research area: numerical linear algebra

Selected topics from the publications:
- optimal rational function used in the ADI method,
- algorithms for Zoltarev and ADI coefficients,
- hypergeometric function,
- double Chebyshev series for hypergeometric functions of two variables,
- Pade approximation,
- reciprocal of power series,
- overdetermined matrix equations,
- geometrical properties of solutions of overdetermined linear systems,
- approximate generalized inverses,
- convex analysis in matrix spaces endowed with unitarily invariant norms,
- strict spectral approximation of matrices,
- approximation of matrices,
- approximation by matrices with restricted spectra,
- zero-trace matrices,
- polar decomposition of matrix - applications and algorithms,
- rounding error analysis,
- matrix functions,
- algorithms for matrix sector function,
- Pade and dual Pade families of iterations for matrix sector function and matrix pth roots
- smoothing filters,
- Procrustes problem

return

http://cs.pwr.edu.pl/zietak