Talks
Plenary Talks and Invited Lecture Series
Numerical analysis as a driving force towards future science.
Faculty Candidate Lecture (Interview) at the Faculty of Engineering & Natural Sciences, Johannes Kepler University, Linz, July 16, 2020.
Strongly conservative discretization and parameter-robust iterative solution methods for multiple-network poroelasticity problems.
Annual GAMM Workshop of the Committee for Numerical Analysis, Essen, September 12, 2019.
Parameter-robust solvers for multiple-network poroelasticity problems with applications.
Mathematical Colloquium, Technical University of Darmstadt, Darmstadt, May 22, 2019.
On the optimal solution of multi-permeability poroelasticity problems.
Scientific Computing Seminar at the Interdisciplinary Center for Scientific Computing, University of Heidelberg, January 10, 2019.
Parameter-robust stability and strongly mass-conservative discretization of multi-permeability poroelasticity model.
Oberwolfach Workshop on Reactive Flows in Deformable, Complex Media: Oberwolfach, Germany, August 26-September 1, 2018.
8th International Conference Computational Methods in Applied Mathematics: CMAM-8, Minsk, Belarus, July 2-6, 2018.
Conservative and parameter-robust discretizations of Biot systems
International Workshop on Flow in Deformable Porous Media: Numerics and Benchmarks, Hamburg, Germany, December 4-6, 2017.
An introduction to the theory and practice of multigrid methods
Summer Schools in Europe, Jyvaskyla, Finland, August 8-12, 2016.
Combined strategies in algebraic multilevel preconditioning
10th International Conference on Large-Scale Scientific Computations, Sozopol, Bulgaria, June 8 - 12, 2015.
Stable discretization and robutst iterative solution methods for the Brinkman problem
High Performance Computing in Science and Engineering, Ostrava, Czech Republic, May 25 - 28, 2015.
Robust preconditioning of weighted H(div)-norm and applications
Modelling 2014, Roznov pod Radhostem, Czech Republic, June 2-6, 2014.
Robust preconditioning of Darcy problem for highly heterogeneous media
International Conference on "Numerical Methods for Scientific Computations and Advanced Applications" Bansko, Bulgaria, May 19-22, 2014.
Auxiliary space multigrid based on domain decomposition
22nd International Conference on Domain Decomposition Methods (DD22), Institute of Computational Science (ICS) of the Universita della Svizzera italiana, Lugano, Switzerland, September 16-20, 2013.
Auxiliary space multigrid method based on additive Schur complement approximation
Weizmann Workshop 2013 on Multilevel Computational Methods and Optimization, The Weizmann Institute of Science, Rehovot, Israel, April 30-May 2, 2013.
Auxiliary space multigrid: two-grid analysis and aspects of parallelization
Autumn School on Parallel Solution of Large Engineering Problems, Ostrava, Czech Republic, November 19-20, 2012.
2nd Annual Workshop on Supercomputer Applications, Bansko, Bulgaria, April 22-24, 2012.
SPOMECH Workshop, Ostrava, Czech Republic, November 22-24, 2011.
Selected Seminar and Conference Talks
Parameter-Robust Preconditioners for Hybridized Discontinuous Galerkin/Hybrid Mixed Methods for Biot’s Equations. SIAM Conference on Mathematical & Computational Issues in the Geosciences (GS21), June 21-24, 2021.
A New Framework for the Stability Analysis of Perturbed Saddle-point Problems and Applications in Poromechanics. 13th International Conference on Large-Scale Scientific Computations (LSSC'21), Sozopol, Bulgaria, June 7-11, 2021.
Uzawa-type iterative methods for double saddle point problems in poromechanics. 91st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM 2020/2021), Kassel, March 15-19, 2021.
Strongly conservative discretization and parameter-robust Uzawa-type methods for multiple-network poroelasticity model. European Numerical Mathematics and Advanced Applications Conference (ENUMATH 2019), Egmond aan Zee, The Netherlands, September 30-October 4, 2019.
Convergence analysis of fixed-stress split iterative method for multiple-network poroelasticity models. 9th International Congress on Industrial and Applied Mathematics (ICIAM 2019), Valencia, Spain, July 15-19, 2019.
Iterative coupling methods for multi-permeability poroelasticity models. InterPore 2019, Valencia, Spain, May 6-10, 2019.
Stable discretizations and parameter-robust preconditioners for flux-based multiple-network poroelasticity systems. 25th International Conference on Domain Decomposition Methods (DD25), St. John's, Newfoundland, Canada, July 23-27, 2018.
Conservative discretizations and parameter-robust preconditioners for multiple-network poroelastic systems. ECCM-ECFD 2018, Glasgow, UK, June 11-15, 2018.
A posteriori error estimates for a class of nonlinear interface problems in relation to solving Poisson-Boltzmann equation. Tufts University, Boston, USA, April 9, 2018.
Parameter-robust stable disretizations and uniform preconditioners for classical three-field formulation of Biot’s consolidation model. European Conference on Numerical Mathematics and Advanced Applications (ENUMATH), Voss, Norway, September 25-29, 2017.
Parameter-robust stability of classical three-field formulation of Biot’s consolidation model and preconditioning. 11th International Conference on Large-Scale Scientific Computations (LSSC'17), Sozopol, Bulgaria, June 5-9, 2017.
Optimal multigrid methods for H(div)-conforming discontinuous Galerkin discretizations of the Brinkman problem. 24th International Conference on Domain Decomposition Methods (DD24), Svalbard, Norway, February 6-10, 2017.
Auxiliary space multigrid method for poroelasticity problem. 8th International Congress on Industrial and Applied Mathematics, Beijing, China, August 10-14, 2015.
Robuste algebraische Mehrgritterverfahren. Antrittsvorlesung, Mathematisches Kolloquium, Universität Duisburg-Essen, Essen, Deutschland, 17. Juni 2015.
Discrete inf-sup condition for Darcy flow in highly heterogeneous media and applications. International Conference on Computational Methods in Applied Mathematics, Strobl/St. Wolfgang, Austria, September 28-October 4, 2014.
Auxiliary space multigrid method for high-frequency high-contrast problems. Research Seminar "Parallel Algorithms and Scientific Computations", Department of Parallel Algorithms, Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Sofia, February 26, 2013.
Auxiliary space multigrid: Two-grid analysis and aspects of parallelization. Autumn School on Parallel Solution of Large Engineering Problems, Ostrava, November 19-20, 2012.
Fictitious space multigrid method based on domain decomposition. European Congress on Computational Methods in Applied Sciences and Engineering, Vienna, Austria, September 10-14, 2012.
Algebraic multilevel preconditioners for the graph Laplacian based on matching in graphs. European Multigrid Conference 2012, Schwetzingen Castle, Germany, August 13-16, 2012.
Robust domain decomposition multigrid methods using additive Schur complement approximation. 21st International Conference on Domain Decomposition Methods, Inria Rennes-Bretagne-Atlantique, France, June 25-29, 2012.
Algebraic multilevel methods based on domain decomposition. Fourth Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences, Varna, Bulgaria, June 11-16, 2012.
Additive Schur complement approximation and application to multilevel preconditioning. Fraunhofer ITWM, Kaiserslautern, Germany, October 28, 2011.
Additive Schur complement approximation and simultaneous two-grid method. 7th International Congress on Industrial and Applied Mathematics, Vancouver, BC, Canada, July 18-22, 2011.
Additive Schur complement approximation for elliptic problems with highly oscillatory coefficients. 8th International Conference on "Large-Scale Scientific Computations", Sozopol, Bulgaria, June 6-10, 2011.
Auxiliary space preconditioner for finite element elasticity systems obtained by reduced integration. 20th Int. Conf. on on Domain Decomposition Methods, UC San Diego, La Jolla, California, February 7-11, 2011.
Subspace correction method for discontinuous Galerkin discretization of elasticity problems.10th European Muligrid Conf., Isola d'Ischia, Italy, September 19-23, 2010.
Auxiliary space method for linear elasticity equations. SIAM/RSME-SCM-SEMA Meeting on Emerging Topics in Dynamical Systems and Partial Differential Equations, Barcelona, Spain, May 31-June 4, 2010.
A subspace correction method for discontinuous Galerkin discretizations of linear elasticity equations. 6th Austrian Analysis Day, University of Salzburg, Austria, May 6-7, 2010.
Algebraic multilevel methods for elliptic finite element equations (Habilitation Colloquium). Johannes Kepler Symposium for Mathematics, University of Linz, July 3, 2009.
Multilevel preconditioning in H(div) and applications. 7th Int. Conf. on Large-Scale Scientific Computations, Sozopol, Bulgaria, June 4-8, 2009.
Hierarchical splittings of discontinuous Galerkin finite element spaces for elliptic problems with highly varying coefficients. 5th Int. Workshop on Parallel Matrix Algorithms and Applications, Neuchâtel, Switzerland, June 20-22, 2008.
Multilevel methods for nonconforming finite element approximations of elliptic problems with large jumps in the coefficients. Miniworkshop on Multiscale Elliptic Solvers, Linz, November 9, 2007.
A multilevel method for discontinuous Galerkin finite-element equations: 3D anisotropic problems. 6th Int. Congress on Industrial and Applied Mathematics, Zürich, Switzerland, July 16-20, 2007.
Multilevel preconditioning of rotated trilinear non-conforming finite element problems. 6th Int. Conf. on Large-Scale Scientific Computations, Sozopol, Bulgaria, June 5-9, 2007.
Algebraic subproblems in multilevel preconditioning methods. Int. Conf. on Multifield Problems. Stuttgart, Germany, October 4-6, 2006.
Multilevel preconditioning of 2D Rannacher-Turek FE problems: Multiplicative and additive methods. 6th Int. Conf. on Numerical Methods and Applications, Borovets, Bulgaria, August 20-24, 2006.
On the construction of a hierarchical topology with application to algebraic multilevel preconditioning. 17th Int. Conf. on Domain Decomposition Methods, St. Wolfgang/Strobl, Austria, July 3-7, 2006.
Algebraic multilevel preconditioning using local Schur complements. Special Radon Semester on Computational Mechanics, RICAM, Linz, November 29, 2005.
An edge-based algebraic multigrid method for finite-element elasticity problems. Lawrence Livermore National Laboratory, Livermore CA, USA, August 16, 2005.
Algebraic multigrid based on computational molecules, 1: Scalar elliptic partial differential equations. 21st GAMM-Seminar, Max-Planck-Institute for Mathematics in the Sciences, Leipzig, January, 26-28, 2005.