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Thomas Führer

Talks & Posters

Talks

2024
[70]Well-posedness of first-order system wave equations and discretization by space-time finite elments, 22th Workshop on Fast Boundary Element Methods in Industrial Applications, 2024. (26.09-29.09, Hirschegg/Kleinwalsertal, Austria)
[69] Test Spaces And Fortin Operators For DPG, 7th Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE), 2024. (15.01--19.01, Concepción, Chile)
[68] Test spaces and Fortin operators for DPG --- with applications, MINRES/LS-6, 2024. (24.06--27.06, Basque center for applied mathematics, Bilbao, Spain)
[67]Space-time least-squares finite element methods, Seminar, 2024. (09.10, Fernuniversität Hagen, Germany)
[66] Robust hybrid finite element methods for reaction-dominated diffusion problems, XXXII Congreso de Matemática CAPRICORNIO (COMCA 2024), 2024. (31.07-02.08, Arica, Chile)
2023
[65]Space-time finite element methods, Seminario de divulgación, IMC, 2023. (29.11, Pontificia Universidad Católica de Chile, Santiago, Chile)
[64] Construction of H(divDiv) elements, XLIX Semana de la Matemática, 2023. (10.10-13.10, Valparaíso, Chile)
[63] Some remarks on mixed FEM: Quasi-optimality, singular data, postprocessing, XXXV Jornada de Matemática de la Zona Sur, 2023. (19.04-21.04, Universidad de Concepción, Concepción, Chile)
[62] Multilevel norms in H^-s, Foundations of Computational Mathematics (FoCM 2023), 2023. (12.06-21.06, Paris, France)
[61] Los algoritmos Top 10, XIX Encuentro con Gauss, 2023. (27.04, Pontificia Universidad Católica de Chile, Chile)
[60] Least-squares finite elements for distributed optimal control problems, European Conference on Numerical Mathematics and Advanced Applications (ENUMATH 2023), 2023. (04.09-08.09, Lisbon, Portugal)
2022
[59] MINRES for second order PDEs with singular data, MINRES/LS-5, 2022. (05.10--07.10, Pontificia Universidad Católica de Chile, Santiago, Chile)
[58] MINRES for second order PDEs with singular data, XXXIV Jornada de Matemática de la Zona Sur (online), 2022. (26.04-29.04, Universidad de Los Lagos, Osorno, Chile)
[57] Space-time finite elements for the optimal control of parabolic equations, CMAM2022, 2022. (29.08--02.09, Technische Universität Wien, Vienna, Austria)
[56] Multilevel decompositions in negative order Sobolev spaces and applications, CMAM2022, 2022. (29.08--02.09, Technische Universität Wien, Vienna, Austria)
[55] Multilevel norms and decompositions in negative order Sobolev spaces, Boundary Elements and Friends (Workshop in honor of Ernst. P. Stephan), 2022. (25.08--27.08, Universität Innsbruck, Innsbruck, Austria)
[54] MINRES methods for the singularly perturbed Darcy equations, BAIL2022, 2022. (28.11--02.12, Universidad de Buenos Aires, Buenos Aires, Argentina)
2021
[53] Descomposiciones y normas multilevel en espacios de Sobolev de órdenes negativos, Seminario Caleta Numérica, 2021. (24.09, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile)
[52] Construction of Trace Finite Element Spaces for Fourth-Order Problems, SIAM CSE21, 2021. (03.03, online congress, USA)
[51] Multilevel norms for negative order Sobolev spaces, XXXIII Jornada de Matemática de la Zona Sur (online), 2021. (20.04-24.04, Universidad de La Frontera, Temuco, Chile)
[50] MINRES for second-order PDEs with singular data, Seminar, 2021. (06.12, Humboldt-Universität zu Berlin)
2020
[49] Optimal quasi-diagonal preconditioners for pseudodifferential operators of order minus two, Seminario Caleta Numérica, 2020. (14.08, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile)
[48] Problema de obstáculo y aproximaciones, Escuela Doctoral 2020, Facultad de Matemáticas, 2020. (18.04, Pontificia Universidad Católica de Chile, Santiago, Chile)
[47] Multilevel norms in negative order Sobolev spaces, Seminar, Oden Institute, 2020. (13.10, Austin, Texas, USA)
2019
[46] DPG for plate bending, part II, 6th Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE), 2019. (21.01--25.01, Concepción, Chile)
[45] Problema de obstáculo y aproximaciones, Seminario Caleta Numérica, 2019. (11.10, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile)
[44] Optimal quasi-diagonal preconditioners for pseudodifferential operators of order minus two, Reliable Methods of Mathematical Modeling (RMMM) 2019, 2019. (09.09-13.09, TU Wien, Vienna, Austria)
[43] A least-squares finite element method for the obstacle problem, The mathematics of finite elements and applications (MAFELAP) 2019, 2019. (18.06-21.06, Brunel University, London, Great Britain)
[42] Introduction to the DPG method: Abstract framework and applications, Partial Differential Equations Seminar, 2019. (26.06, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal)
[41] Ultraweak formulation of linear elliptic PDEs in nondivergence form and DPG approximation, Minimum Residual & Least-Squares Finite Element Methods 2019, 2019. (16.09-18.09, Humboldt-Universität zu Berlin, Berlin, Germany)
[40]Problemas Bi-Laplacianos -- Formulaciones variacionales, trazas y aproximaciones, Coloquio de Mátematica, Facultad de Matemáticas, 2019. (12.04, Pontificia Universidad Católica de Chile, Santiago, Chile)
2018
[39] On the DPG method for Signorini problems, 13th World Congress in Computational Mechanics, 2018. (22.07--27.07, New York, USA)
[38]Superconvergence in a DPG method for an ultra-weak formulation, Symposium Numerical PDE, 2018. (25.01, Pontificia Universidad Católica de Chile, Santiago, Chile)
[37]Problema de obstáculo y aproximaciones, Seminario de divulgación, IMC, 2018. (18.04, Pontificia Universidad Católica de Chile, Santiago, Chile)
[36] A Least-Squares method for the Obstacle Problem, XXXI Jornada de Matemática de la Zona Sur, 2018. (25.04-27.04, Universidad Austral de Chile, Valdivia, Chile)
[35] On the coupling of DPG and BEM, Symposium of the International Association for Boundary Element Methods (IABEM), 2018. (26.06--28.06, Paris, France)
[34] Superconvergent DPG methods for second order elliptic problems, Computational Methods in Applied Mathematics: CMAM-8, 2018. (03.07--05.07, Raubichi Sports Complex, Belarus)
[33] Stable multilevel splittings in __MATH0__, The Second Chilean Symposium on Boundary Element Methods (invited talk), 2018. (14.12, Valparaíso, Chile)
2017
[32]A linear Uzawa-type solver for nonlinear transmission problems, Encuentro anual de SOMACHI, 2017. (02.11-04.11, Universidad de Talca, Talca, Chile)
[31] On the DPG method for Signorini problems, Santiago Numérico III, 2017. (28.06-30.06, PUC, Santiago, Chile)
[30] Superconvergence in the DPG method with ultra-weak formulation, Minimum Residual & Least-Squares Finite Element Methods, 2017. (02.10-04.10, Portland State University, Portland, USA)
[29] A linear Uzawa-type solver for nonlinear transmission problems, BEM on the Saar 2017, 2017. (29.05-31.05, University of Saarbrücken, Saarbrücken, Germany)
[28] On the DPG method for Signorini problems, Austrian Numerical Analysis Day, 2017. (04.05-05.05, Paris Lodron University of Salzburg, Salzburg, Austria)
2016
[27] On the coupling of DPG and BEM, 5th Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE), 2016. (11.01-15.01, Concepción, Chile)
[26]El método DPG: Introducción y Extensiones, Seminario Ingeniería PUC (invited talk), 2016. (31.08, PUC, Santiago, Chile)
[25] Robust coupling of DPG and BEM for a singularly perturbed transmission problem, The mathematics of finite elements and applications (MAFELAP) 2016, 2016. (14.06-17.06, Brunel University, London, Great Britain)
[24] Sobre el acomplamiento de DPG con BEM, XXIX Jornada de Matemática de la Zona Sur, 2016. (21.04-23.04, Universidad de Talca, Santa Cruz, Chile)
[23] Robust coupling of DPG and BEM for a singularly perturbed transmission problem, International Conference on Boundary and Interior Layers (BAIL) 2016, 2016. (14.08-19.08, CSRC, Beijing, China)
[22] On the coupling of DPG and BEM, The First Chilean Symposium on Boundary Element Methods (invited talk), 2016. (14.12, PUC, Santiago, Chile)
2015
[21]A wirebasket preconditioner for the mortar boundary element method, Caleta Numérica (invited talk), 2015. (12.06, PUCV, Valparaíso, Chile)
[20] Multilevel methods for the hypersingular integral equation on locally refined triangulations, La Serena Numérica II, 2015. (14.01-16.01, La Serena, Chile)
[19]A wirebasket preconditioner for the mortar boundary element method, Seminar (invited talk), 2015. (09.06, Universidad del Bío Bío, Concepción, Chile)
[18] Optimal preconditioning for the coupling of adaptive FEM and BEM, 1st Pan-American Congress on Computational Mechanics (PANACM 2015), 2015. (27.04-29.04, Buenos Aires, Argentina)
[17] DPG method with optimal test functions for a fractional advection diffusion equation, XXIV Congreso de Matemática CAPRICORNIO (COMCA 2015), 2015. (05.08-07.08, Iquique, Chile)
2014
[16]Optimal preconditioning for the coupling of adaptive FEM and BEM, 12th Workshop on Fast Boundary Element Methods in Industrial Applications, 2014. (25.09-28.09, Hirschegg/Kleinwalsertal, Austria)
[15]Optimal preconditioning for the coupling of adaptive FEM and BEM, Seminar (invited talk), 2014. (11.09, Leibniz Universität Hannover, Hannover, Germany)
[14]Coupling of FEM and BEM: adaptivity and preconditioning, Seminar (invited talk), 2014. (20.11, TU Graz, Graz, Austria)
[13]Optimal preconditioning for the coupling of adaptive finite elements and boundary elements, 11th World Congress on Computational Mechanics (WCCM XI), 2014. (20.07-25.07, Barcelona, Spain)
[12]Efficient additive Schwarz preconditioning of the hypersingular integral equation on locally refined triangulations, Doctoral Program on Dissipation and Dispersion nPDEs (Seminar), 2014. (22.01, Vienna University of Technology, Austria)
2013
[11]Convergence of adaptive FEM-BEM coupling, 4th Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE), 2013. (14.01-18.01, Concepción, Chile)
[10]Efficient additive Schwarz preconditioning of the hypersingular integral equation on locally refined triangulations, 11th Workshop on Fast Boundary Element Methods in Industrial Applications, 2013. (26.09-29.09, Hirschegg/Kleinwalsertal, Austria)
[9]FEM-BEM couplings without stabilization, Symposium of the International Association for Boundary Element Methods (IABEM), 2013. (09.01-11.01, Santiago de Chile, Chile)
[8]Additive Schwarz methods for non-symmetric FEM-BEM couplings on locally refined meshes, Seminar (invited talk), 2013. (05.07, Leibniz Universität Hannover, Hannover, Germany)
[7]Stability of FEM-BEM couplings for nonlinear elasticity problems, 9th Austrian Numerical Analysis Day, 2013. (11.04-12.04, Graz, Austria)
2012
[6]FEM-BEM coupling without stabilization, 10th Workshop on Fast Boundary Element Methods in Industrial Applications, 2012. (27.09-30.09, Hirschegg/Kleinwalsertal, Austria)
[5]Convergence of adaptive FEM-BEM coupling driven by residual-based error estimators, 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), 2012. (10.09-14.09, Vienna, Austria)
[4]Classical FEM-BEM couplings: well-posedness, nonlinearities, and adaptivity, BEM on the Saar 2012, 2012. (12.05-16.05, Universität des Saarlandes, Saarbrücken, Germany)
[3]Classical FEM-BEM couplings: well-posedness, nonlinearities, and adaptivity, 8th Austrian Numerical Analysis Day, 2012. (10.05-11.05, Vienna University of Technology, Austria)
2010
[2]Computing the magnetostatic potential, Numerik-Statusseminar Ulm und Wien, 2010. (25.08-29.08, Kleinarl, Austria)
2009
[1]Computing the magnetostatic potential, Numerik-Statusseminar Ulm und Wien, 2009. (12.09-19.09, Cortona, Italy)

Posters

2012
[1] Convergence of adaptive FEM-BEM coupling driven by residual-based error estimators (Markus Aurada, Michael Feischl, Thomas Führer, Michael Karkulik, Jens Markus Melenk, Dirk Praetorius), TCSE Vienna Workshop 2012, 2012. (13.02-14.02, Vienna University of Technology, Austria)

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