© Dirk Praetorius
Aktuelle Forschungsinteressen
- Numerik von PDEs
- Finite Elemente Methode (FEM)
- Randelementmethode (BEM)
- a-posteriori Fehlerschätzung und adaptive Netzverfeinerung
- optimale Kopplung von Netzverfeinerung und iterativen Lösern
- Matrixkompression und Black-Box-Vorkonditionierung durch Verwendung von hierarchischen Matrizen
- Computational Micromagnetics
Wissenschaftliche Publikationen
- M. Brunner, D. Praetorius, J. Streitberger: Cost-optimal adaptive FEM for semilinear elliptic PDEs, Proceedings of ENUMATH 2023, Volume 1, Lecture Notes in Computational Science and Engineering, 153, 209–219, 2025. [www], [preprint]
- M. Brunner, D. Praetorius, J. Streitberger: Optimal cost of (goal-oriented) adaptive FEM for general second-order linear elliptic PDEs, Volume 1, Proceedings of ENUMATH 2023, Lecture Notes in Computational Science and Engineering, 153, 198–208, 2025. [www], [preprint]
- C. Erath, D. Praetorius: Céa-type quasi-optimality and convergence rates for (adaptive) vertex-centered FVM, in: Finite Volumes for Complex Applications VIII - Methods and Theoretical Aspects (FVCA 2017), Springer, Wien, 2017, pp. 215–223. [www]
- P. Goldenits, G. Hrkac, D. Praetorius, D. Süss: An effective integrator for the Landau-Lifshitz-Gilbert equation, MATHMOD 2012 – 7th Vienna Conference on Mathematical Modelling, International Federation of Automatic Control, Mathematical Modelling, Volume 7, Part 1 (2012), pp. 493–497. [www]
- M. Aurada, M. Feischl, M. Karkulik, D. Praetorius: Adaptive coupling of FEM and BEM: Simple error estimators and convergence, Proceedings in Applied Mathematics and Mechanics (PAMM), 11 (2011), 755–756. [www]
- M. Feischl, M. Page, D. Praetorius: Convergence of adaptive FEM for elliptic obstacle problems, Proceedings in Applied Mathematics and Mechanics (PAMM), 11 (2011), 767–768. [www]
- M. Feischl, M. Page, D. Praetorius: Convergence and quasi-optimality of adaptive FEM with inhomogeneous Dirichlet data, Proceedings in Applied Mathematics and Mechanics (PAMM), 11 (2011), 769–772. [www]
- P. Goldenits, D. Praetorius, D. Süss: Convergent geometric integrator for the Landau-Lifshitz Gilbert equation in micromagnetics, Proceedings in Applied Mathematics and Mechanics (PAMM), 11 (2011), 775–776. [www]
- M. Aurada, J.M. Melenk, D. Praetorius: Mixed conforming elements for the large-body limit in micromagnetics, Proceedings of MATHMOD 09 – 6th Vienna Conference on Mathematical Modelling, ARGESIM Report no. 35 (2009), 2296–2303. [www]
- S. Ferraz-Leite, J.M. Melenk, D. Praetorius: Reduced model in thin-film micromagnetics, Proceedings of MATHMOD 09 – 6th Vienna Conference on Mathematical Modelling, ARGESIM Report no. 35 (2009), 2287–2295. [www]
- C. Erath, S. Funken, D. Praetorius: Adaptive cell-centered finite volume method, in: Finite Volumes for Complex Applications V, R. Eymard, J. Hérard (eds.), John Wiley & Sons, (2008), pp. 359-366.
- W. Boiger, C. Carstensen, D. Praetorius: Strong convergence for large bodies in micromagnetics, Proceedings in Applied Mathematics and Mechanics (PAMM), 7 (2007), 1151203–1151204. [www]
- N. Popovic, D. Praetorius, A. Schlömerkemper: Magnetic force formulae for magnets at small distances, Proceedings in Applied Mathematics and Mechanics (PAMM), 5 (2005), 631–632. [www]
- C. Carstensen, D. Praetorius: On stabilized models in micromagnetics, Proceedings of ECCOMAS 2004 – 4th European Congress on Computational Methods in Applied Sciences and Engineering, Proceedings Volume II, (2004).
- S. Kurz, D. Pauly, D. Praetorius, S. Repin, D. Sebastian: Functional a-posteriori error estimates for BEM, Oberwolfach Workshop on Boundary Element Methods, Oberwolfach Reports, European Mathematical Society, 17/2020 (2020).
- G. Gantner, A. Haberl, D. Praetorius, B. Stiftner: Rate optimal adaptive FEM with inexact solver for strongly monotone operators, Oberwolfach Workshop on Adaptive Algorithms, Oberwolfach Reports, European Mathematical Society, 44/2016 (2016).
- M. Ruggeri, D. Praetorius, B. Stiftner: Coupling and numerical integration of the Landau-LifshitzGilbert equation, Oberwolfach Workshop on Mathematics of Magnetoelastic Materials, Oberwolfach Reports, European Mathematical Society, 51/2016 (2016).
- C. Carstensen, M. Feischl, D. Praetorius: Rate optimality of adaptive algorithms, ECCOMAS Newsletter, 07 (2014), 20–23. [pdf]
- C. Carstensen, M. Feischl, D. Praetorius: Rate optimality of adaptive algorithms: An axiomatic approach, part II: Extensions, Proceedings of 11th World Congress on Computational Mechanics (WCCM XI), Barcelona, 2014, pp. 2511–2522.
- M. Feischl, T. Führer, D. Praetorius, E. Stephan: Optimal preconditioning for the coupling of adaptive finite elements and boundary elements, Proceedings of 11th World Congress on Computational Mechanics (WCCM XI), Barcelona, 2014, pp. 2108–2119.
- M. Feischl, G. Gantner, D. Praetorius: A posteriori error estimation for adaptive IGA boundary element methods, Proceedings of 11th World Congress on Computational Mechanics (WCCM XI), Barcelona, 2014, pp. 2421–2432.
- M. Feischl, T. Führer, M. Karkulik, J.M. Melenk, D. Praetorius: Novel inverse estimates for non-local operators, Proceedings of IABEM 2013 Symposium of the International Association for Boundary Element Methods, pp. 79–84.
- M. Feischl, T. Führer, M. Karkulik, J.M. Melenk, D. Praetorius: FEM-BEM couplings without stabilization, Proceedings of IABEM 2013 Symposium of the International Association for Boundary Element Methods, pp. 48–53.
- M. Feischl, T. Führer, M. Karkulik, J.M. Melenk, D. Praetorius: Quasi-optimal adaptive BEM, Proceedings of IABEM 2013 Symposium of the International Association for Boundary Element Methods, pp. 44–47.
- F. Reichel, T. Schrefl, D. Süss, G. Hrkac, D. Praetorius, M. Gusenbauer, S. Bance, H. Oezelt, J. Fischbacher, L. Exl: Mechanical Oscillations of magnetic strips under the influence of external field, Proceedings of JEMS 2012 – Joint European Magnetism Symposia, EPJ Web of Conferences, 40 (2013), 13004.
- J.M. Melenk, M. Faustmann, D. Praetorius: Efficient and robust approximation of the Helmholtz equation, Oberwolfach Reports, 9 (2012), 3305-3338.
- M. Aurada, M. Feischl, M. Karkulik, D. Praetorius: Adaptive coupling of FEM and BEM: Simple error estimators and convergence (IABEM 2011), IABEM 2011 Conference, Brescia, 05.09.201108.09.2011, Proceedings of IABEM 2011, (2011), S. 35-40.
- M. Aurada, M. Feischl, M. Karkulik, D. Praetorius: Adaptive coupling of FEM and BEM: Simple error estimators and convergence (AfriCOMP11), Proceedings of AfriCOMP11 - 2nd African Conference on Computational Mechanics (2011), #56.
- M. Feischl, M. Karkulik, J.M. Melenk, D. Praetorius: Residual a-posteriori error estimates in BEM: convergence of h-adaptive algorithms, IABEM 2011 Conference, Brescia, 05.09.2011-08.09.2011, Proceedings of IABEM 2011, (2011), pp. 135-140.
- M. Aurada, S. Ferraz-Leite, D. Praetorius: Convergence of adaptive boundary element methods, Proceedings of CMM 2009 – Computer Methods in Mechanics, 113–114.
- S. Ferraz-Leite, C. Ortner, D. Praetorius: Adaptive boundary element method: Simple error estimators and convergence, Oberwolfach Workshop on Analysis of Boundary Element Methods, Oberwolfach Reports, Volume 5, Issue 2 (2008).
- C. Ortner, D. Praetorius: A non-conforming finite element method for convex variational problems, Oberwolfach Workshop on Nonstandard Finite Element Methods, Oberwolfach Reports, Volume 5, Issue 3 (2008).
- C. Carstensen, S. Funken, D. Praetorius: Averaging techniques for BEM, Book of Abstracts, IABEM 2006 Conference, pp. 139–142.
- O. Koch, R. März, D. Praetorius, E. Weinmüller: Collocation methods for index-1 DAEs with a critical point, Oberwolfach Workshop on Differential-Algebraic Equations, Oberwolfach Reports, 18 (2006), pp. 81–84.
Wissenschaftliche Vorträge
- Unconditional full R-linear convergence and optimal complexity of AFEM for nonlinear PDEs [Poster (PDF)]
3rd SFB International Workshop 2025 "Taming Complexity in Partial Differential Systems", University of Vienna, 2025 - Functional a-posteriori error estimates for BEM[Handout (PDF)]
Workshop 2CCC, HU Berlin, 2024 - Optimal interplay of adaptive mesh-refinement and iterative solvers for elliptic PDEs[Handout (PDF)]
Plenary talk at CMAM 2024 conference, University of Bonn, 2024 - On optimal computational costs of AFEM [Handout (PDF)]
Workshop CC2LX, TU Wien, 2022 - Goal-oriented adaptive FEMs with optimal computational complexity [Handout (PDF)]
Workshop on Recent Advances in the Numerical Approximation of PDEs, University of Milan, 2021 - Chiral magnetic skyrmions and computational micromagnetism [Handout (PDF)]
GAMM Seminar on Microstructures, University of Freiburg, 2020 - Rate optimal adaptive FEM with inexact solver for nonlinear operators [Handout (PDF)]
Workshop BI.discrete, University of Bielefeld, 2019 - Adaptive BEM with inexact PCG solver yields almost optimal computational costs [Handout (PDF)]
Mathematical colloquium at University of Bayreuth, 2019 - Axioms of adaptivity revisited: Optimal adaptive IGAFEM [Handout (PDF)]
ESI Workshop on Interplay of geometric processing, modelling, and adaptivity in Galerkin methods, Erwin-Schrödinger Institute, Wien, 2018 - Optimal convergence rates for adaptive FEM for compactly perturbed elliptic problems [Handout (PDF)]
Conference on Foundations of Computational Mathematics, University of Barcelona, 2017 - AFEM with inhomogeneous Dirichlet data [Handout (PDF)]
Central Workshop, TU Wien, 2017