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Stefan Takacs

PORTRAIT

Dipl.-Ing. Dr. Stefan Takacs

(former member)

Publications

 


This page only contains information on my PhD-project. For more recent information, visit my current homepage:

http://www.numa.uni-linz.ac.at/~stefant/personal/

Short Curriculum Vitae

 
  • 1984 born in Linz, Austria
  • 2003 2006 Bachelor in Technical Mathematics at JKU, Linz,
  Austria.

  • 2006 2008 Master in Industrial Mathematics at JKU, Linz,
  Austria.

  • 2008 2012 PhD Student in the Doctoral Program "Computational Mathematics'', JKU, Linz,
  Austria.

Research Interests


  • Iterative methods for optimality systems (KKT systems)
  • Multigrid methods
  • Fourier analysis and symbolic methods

Research stays

 
  • October December, 2010. University of Oxford, United Kingdom.

  • August, 2011. University of Trier, Germany.
  • May August, 2012. TU Chemnitz, Germany.

Participation at conferences and workshops

 
  • May 7 – 8, 2009. Austrian Numerical Analysis day, Innsbruck, Austria.
    • Contributed talk: Multigrid methods for elliptic optimal control problems with Neumann boundary control
  • June 17 – 23, 2009. Summer school on isogeometric analysis, Copenhagen, Denmark.
  • June 29 – July 3, 2009. European Conference on Numerical Mathematics and Advanced Applications (ENUMATH), Uppsala, Sweden.
    • Contributed talk: Multigrid methods for elliptic optimal control problems with Neumann boundary control
  • May 6 – 7, 2010. Austrian Numerical Analysis day, Salzburg, Austria.
    • Contributed talk: Point Smoothers for Elliptic Optimal Control Problems
  • May 31 June 1, 2010. Workshop on Discontinuous Galerkin Methods - Solvers and Applications, Linz, Austria.
  • September 19 – 23, 2010. European Multigrid Conference (EMG), Ischia, Italy.
    • Contributed talk: Point Smoothers for Elliptic Optimal Control Problems
  • April 18 – 21, 2011. Gesellschaft für Angewandte Mathematik und Mechanik (GAMM) – Annual Scientific Conference, Graz, Austria.
    • Contributed talk: Using symbolic methods to analyze convergence properties of multigrid methods
  • September 5 – 9, 2011. European Conference on Numerical Mathematics and Advanced Applications (ENUMATH), Leicester, United Kingdom.
    • Contributed talk: Symbolic Local Fourier Analysis for Multigrid Methods with Applications in Optimal Control
  • March 26 – 30, 2012. Gesellschaft für Angewandte Mathematik und Mechanik (GAMM) – Annual Scientific Conference, Darmstadt, Germany.
    • Talk at minisymposium: A multigrid framework applied to an elliptic optimal control problem with reduced regularity
  • August 13 – 16, 2012. European Multigrid Conference (EMG), Schwetzingen Castle, Germany.
    • Contributed talk: A Multigrid Framework Applied to an Optimal Control Problem with Reduced Regularity
  • August 17, 2012. Symposium on Scientific Computing in Honour of Ulrich Langer's Sixtieth Birthday, Schwetzingen Castle, Germany

Publications

 
  • S. Takacs and W. Zulehner. Multigrid methods for elliptic optimal control problems with neumann boundary control. In G. Kreiss, P. Lötstedt, A. Malqvist, and M. Neytcheva, editors, Numerical Mathematics and Advanced Applications 2009, p. 855 – 863. Springer Berlin Heidelberg, 2010. [DK-Report 2009-01]
  • V. Pillwein and S. Takacs.  Smoothing analysis of an all-at-once multigrid approach for optimal control problems using symbolic computation. In U. Langer and P. Paule, editors, Numerical and Symbolic Scientific Computing: Progress and Prospects. Springer Wien, 2011. [DK-Report 2010-09]
  • S. Takacs and W. Zulehner. Convergence analysis of multigrid methods with collective point smoothers for optimal control problems. Computing and Visualization in Science, Vol. 14: p. 131 – 141, 2011. [DK-Report 2011-01]
  • V. Pillwein and S. Takacs. A local Fourier convergence analysis of a multigrid method using symbolic computation. Submitted. [DK-Report 2012-04]
  • S. Takacs and W. Zulehner. Convergence Analysis of All-at-once Multigrid Methods for Elliptic Control Problems Under Partial Elliptic Regularity. Submitted. [DK-Report 2012-08]