Dr. Johannes Pfefferer, AkadR


Picture of Johannes Pfefferer

Technical University of Munich

Chair of Optimal Control (Prof. Vexler)

since 10/2023 at Universität der Bundeswehr

Curriculum Vitae

 

University Education
June 2014 Dr. rer. nat. (summa cum laude), Universität der Bundeswehr München
Oct. 2007 Dipl.-Tech. Math. (with distinction), Technische Universität München
Oct. 2001 - Oct. 2007 Study of technomathematics, Technische Universität München
Professional Career
Sept. 2020 - Sept. 2023 Lecturer (Akademischer Rat), Technische Universität München
May 2019 - Sept. 2020 Lecturer (Akademischer Rat auf Zeit), Technische Universität München
Jan. 2016 - Apr. 2019 Research associate, Technische Universität München
Oct. 2015 - Dez. 2015 Research associate, George Mason University, Fairfax, Virginia, USA
Oct. 2007 - Sept. 2015 Research associate, Universität der Bundeswehr München
Oct. 2006 - July 2007 Student assistant, Technische Universität München
Jan. 2006 - June 2006 Student employee, BMW M GmbH
Mar. 2005 - Sept. 2005 Student employee, BMW M GmbH
Awards
Nov. 2018 Teaching award for the summer term 2018: Platz 3 der besten Übungsbetriebe für "Modern Methods in Nonlinear Optimization"
June 2017 Teaching award for the winter term 2016/17: Platz 3 der besten Grundlagenvorlesungen für "Nichtlineare Optimierung: Grundlagen"
Oct. 2014 Award for an excellent Ph.D. thesis, Förderverein Konstruktiver Ingenieurbau, Universität der Bundeswehr München

Winter term 2023/24

TitleDatesDurationLecturer (assistant)
Precourse SoM+SoED en/InnenstadtLink2

A list of previous courses can be found on TUMonline.

2023

  • Bruhse, Hendrik: Analysis and Applications of a Space-Time Finite Element Discretization of a Parabolic Problem. Master thesis, 2023 more…

2021

  • Kowalczyk, Julia: Generalisation properties of neural networks in optimal control. Master thesis, 2021 more…
  • Wirthl, Monika: Neural network based surrogate models for nonlinear advection terms of partial differential equations. Master thesis, 2021 more…

2020

  • Fritz, Tobias: Conditional value at risk optimization - analysis of robustness and stability (zusammen mit Allianz Global Investors GmbH). Master thesis, 2020 more…
  • Loncar, Fran Ante: Properties of data driven models in elasticity. Master thesis, 2020 more…
  • Scheerer, Almut: Analysis and finite element discretization of a shape optimization problem in measure spaces. Master thesis, 2020 more…
  • Wagner, Jakob: Higher Order Finite Elements for Sparse Initial Data Identification of Parabolic Problems. Master thesis, 2020 more…

2019

  • Emmermann, Nora: Reconstructing Optical Flow: An Optimal Control Framework. Bachelor thesis, 2019 more…
  • Fischer, Simon: Zeitschrittverfahren für Optimalsteuerungsprobleme und ihre Verbindung zu Deep Learning. Bachelor thesis, 2019 more…

2018

  • Stegmaier, Carmen: Learning of model parameters in image denoising. Bachelor thesis, 2018 more…

2017

  • Berchtenbreiter, Benedikt: A new formulation for optimal control problems posed on nonconvex polygonal domains enforcing H2 regularity. Master thesis, 2017 more…
  • Huber, Andreas: FE-Analysis for PDE-constrained optimal control problems with tracking of the normal derivative. Master thesis, 2017 more…

2016

  • Schürholz, Klemens: hp-Finite Element Method for Fractional Diffusion. Master thesis, 2016 more…
  • Wagner, Philipp: Die nichtlineare Methode der kleinsten Quadrate: angepasste Lösungsalgorithmen und deren Anwendung bei Parameteridentifikationsproblemen. Bachelor thesis, 2016 more…
  • Wude, Christian: Superkonvergenzeigenschaften für PDGL-beschränkte Optimalsteuerungsprobleme mit Mass-Lumping. Master thesis, 2016 more…

2024

  • Pfefferer, Johannes; Vexler, Boris: Numerical Analysis for Dirichlet Optimal Control Problems on Convex Polyhedral Domains. , 2024 more… BibTeX Full text ( DOI )

2022

  • Pfefferer, Johannes; Winkler, Max: Finite Element Approximations for PDEs with Irregular Dirichlet Boundary Data on Boundary Concentrated Meshes. Computational Methods in Applied Mathematics 0 (0), 2022 more… BibTeX Full text ( DOI )

2019

  • Apel, Thomas; Mateos, Mariano; Pfefferer, Johannes; Rösch, Arnd: Superconvergent Graded Meshes for an Elliptic Dirichlet Control Problem. In: Lecture Notes in Computational Science and Engineering. Springer International Publishing, 2019 more… BibTeX Full text ( DOI )
  • Hafemeyer, Dominik; Kahle, Christian; Pfefferer, Johannes: Finite element error estimates in \(L^2\) for regularized discrete approximations to the obstacle problem. Numerische Mathematik 144 (1), 2019, 133-156 more… BibTeX Full text ( DOI )
  • Pfefferer, Johannes; Winkler, Max: Finite Element Error Estimates for Normal Derivatives on Boundary Concentrated Meshes. SIAM Journal on Numerical Analysis 57 (5), 2019, 2043-2073 more… BibTeX Full text ( DOI )

2018

  • Antil, Harbir; Pfefferer, Johannes; Rogovs, Sergejs: Fractional operators with inhomogeneous boundary conditions: analysis, control, and discretization. Communications in Mathematical Sciences 16 (5), 2018, 1395-1426 more… BibTeX Full text ( DOI )
  • Apel, Thomas; Mateos, Mariano; Pfefferer, Johannes; Rösch, Arnd: Error estimates for Dirichlet control problems in polygonal domains: Quasi-uniform meshes. Mathematical Control & Related Fields 8 (1), 2018, 217-245 more… BibTeX Full text ( DOI )
  • Meidner, Dominik; Pfefferer, Johannes; Schürholz, Klemens; Vexler, Boris: hp-Finite Elements for Fractional Diffusion. SIAM Journal on Numerical Analysis 56 (4), 2018, 2345-2374 more… BibTeX Full text ( DOI )

2017

  • Antil, Harbir; Pfefferer, Johannes; Warma, Mahamadi: A note on semilinear fractional elliptic equation: analysis and discretization. ESAIM: Mathematical Modelling and Numerical Analysis 51 (6), 2017, 2049-2067 more… BibTeX Full text ( DOI )
  • Apel, Thomas; Winkler, Max; Pfefferer, Johannes: Error estimates for the postprocessing approach applied to Neumann boundary control problems in polyhedral domains. IMA Journal of Numerical Analysis 38 (4), 2017, 1984-2025 more… BibTeX Full text ( DOI )

2016

  • Apel, Thomas; Nicaise, Serge; Pfefferer, Johannes: Discretization of the Poisson equation with non-smooth data and emphasis on non-convex domains. Numerical Methods for Partial Differential Equations 32 (5), 2016, 1433-1454 more… BibTeX Full text ( DOI )

2015

  • Apel, Thomas; Mateos, Mariano; Pfefferer, Johannes; Rösch, Arnd: On the Regularity of the Solutions of Dirichlet Optimal Control Problems in Polygonal Domains. SIAM Journal on Control and Optimization 53 (6), 2015, 3620-3641 more… BibTeX Full text ( DOI )
  • Apel, Thomas; Pfefferer, Johannes; Winkler, Max: Local mesh refinement for the discretization of Neumann boundary control problems on polyhedra. Mathematical Methods in the Applied Sciences 39 (5), 2015, 1206-1232 more… BibTeX Full text ( DOI )
  • Neitzel, Ira; Pfefferer, Johannes; Rösch, Arnd: Finite Element Discretization of State-Constrained Elliptic Optimal Control Problems with Semilinear State Equation. SIAM Journal on Control and Optimization 53 (2), 2015, 874-904 more… BibTeX Full text ( DOI )

2014

  • Apel, Thomas; Pfefferer, Johannes; Rösch, Arnd: Finite element error estimates on the boundary with application to optimal control. Mathematics of Computation 84 (291), 2014, 33-70 more… BibTeX Full text ( DOI )
  • Apel, Thomas; Pfefferer, Johannes; Rösch, Arnd: Graded Meshes in Optimal Control for Elliptic Partial Differential Equations: An Overview. In: International Series of Numerical Mathematics. Springer International Publishing, 2014 more… BibTeX Full text ( DOI )
  • Krumbiegel, Klaus.; Pfefferer, Johannes: Superconvergence for Neumann boundary control problems governed by semilinear elliptic equations. Computational Optimization and Applications 61 (2), 2014, 373-408 more… BibTeX Full text ( DOI )

2011

  • Apel, Thomas; Pfefferer, Johannes; Rösch, Arnd: Finite element error estimates for Neumann boundary control problems on graded meshes. Computational Optimization and Applications 52 (1), 2011, 3-28 more… BibTeX Full text ( DOI )

Scientific Articles in Proceedings
Thomas Apel, Mariano Mateos, Johannes Pfefferer, Arnd Rösch:
Superconvergent graded meshes for an elliptic Dirichlet control problem.
Advanced Finite Element Methods with Applications - Proceedings of the 30th Chemnitz FEM Symposium 2017,
accepted, 2018.
Thomas Apel, Johannes Pfefferer, Arnd Rösch:
Locally refined meshes in optimal control for elliptic partial differential equations - an overview.
Trends in PDE Constrained Optimization: Günter Leugering, Peter Benner, Sebastian Engell, Andreas Griewank, Helmut Harbrecht, Michael Hinze, Rolf Rannacher, Stefan Ulbrich (ed.),
Springer Verlag, Basel, 2014. (doi:10.1007/978-3-319-05083-6_18)
Technical Reports and Internal Research Reports
H. Antil, J. Pfefferer:
A short Matlab implementation of fractional Poisson equation with nonzero boundary conditions.
Technical Report, 2017. (Code)
H.-D. Ließ, F. Loos, J. Pfefferer:
Berechnung der Erwärmung von Leiterbahnen.
Interner Forschungsbericht, 2010.
H.-D. Ließ, J. Pfefferer:
Widerstandsverlauf beim Trennen eines Flachleiters.
Interner Forschungsbericht, 2009.
PhD and Diploma Theses
Numerical analysis for elliptic Neumann boundary control problems on polygonal domains
PhD Thesis, Universität der Bundeswehr München, 2014. (urn:nbn:de:bvb:706-3624)
Efficient recursive Formulation of Optimal Control Problems for Industrial Manipulators
Diploma Thesis, Technische Universität München, 2007.
Poster
Finite element error estimates for boundary control problems
6th Singular Days 2010, Berlin, 2010
Dirichlet boundary control problems: finite element discretization and error estimates
FEM-Symposium, Chemnitz, 2012

Talks on conferences
Finite element error estimates for PDEs with irregular Dirichlet boundary data using boundary concentrated meshes. Chemnitz Finite Element Symposium 2022, Herrsching, 09/2022.
Optimal control problems in non-convex domains with regularity constraints. International Congress on Industrial and and Applied Mathematics (ICIAM), Valencia, 07/2019.
Finite element error estimates in L 2 for regularized discrete approximations to the obstacle problem. Conference on the Mathematics of Finite Elements and Applications (MAFELAP), Brunel, 06/2019.
Optimal control problems in non-convex domains with regularity constraints. 11. Chemnitzer Seminar zur Optimalsteuerung 2019, Haus, 02/2019.
Optimal control problems in non-convex domains with regularity constraints. Oberwolfach Mini-Workshop: Numerical Analysis for Non-Smooth PDE-Constrained Optimal Control Problems (1851a), Oberwolfach, 12/2018.
Optimal control problems in non-convex domains with regularity constraints. 5th European Conference on Computational Optimization (EUCCO), Trier, 09/2018.
Optimal control problems in non-convex domains with regularity constraints. 28th IFIP TC7 Conference on System Modelling and Optimization, Essen, 07/2018.
Discretization error estimates for normal derivatives on boundary concentrated meshes. 28th IFIP TC7 Conference on System Modelling and Optimization, Essen, 07/2018.
Error estimates for normal derivatives on boundary concentrated meshes. 89th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), München, 03/2018.
hp-finite elements for fractional diffusion. 30th Chemnitz FEM Symposium 2017, Strobl, 09/2017.
Weighted finite element error estimates and its application to Dirichlet boundary control problems. IFIP WG 7.2 Workshop on Optimal Control of Partial Differential Equations, Castro Urdiales, 09/2017.
Different numerical aspects for Dirichlet boundary control problems. SIAM Conference on Control and Its Applications (SICON), Pittsburgh, 07/2017.
Numerical aspects and error estimates for Dirichlet boundary control problems. SIAM Conference on Optimization (SIOPT), Vancouver, 05/2017.
Adapted numerical methods for the Poisson equation with L^2 boundary data in non-convex domains. Conference on Computational Methods in Applied Mathematics (CMAM-7), Jyväskylä, 07/2016.
Adapted numerical methods for the Poisson equation with L^2 boundary data in non-convex domains. Conference on the Mathematics of Finite Elements and Applications (MAFELAP), Brunel, 06/2016.
Discretization error estimates for Dirichlet control problems in polygonal domains. Workshop on Numerical Methods for Optimal Control and Inverse Problems (OCIP), Garching, 03/2016.
Finite element error estimates for Dirichlet boundary control problems in polygonal domains. 27th IFIP TC7 Conference on System Modelling and Optimization, Sophia Antipolis, 06/2015.
Finite element error estimates for Dirichlet boundary control problems on polygonal domains. 86th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Lecce, 3/2015.
Finite element error estimates for Dirichlet control problems in convex and non-convex domains. 6th International Conference on High Performance Scientific Computing, Hanoi, 03/2015.
Finite element error estimates on the boundary for elliptic boundary value problems with Neumann boundary data. 5th European Conference on Computational Mechanics, Barcelona, 07/2014.
Numerical analysis for semilinear elliptic optimal control problems with pointwise state constraints. Chemnitzer Seminar zur Optimalsteuerung, Haus, 02/2014.
On properties of discretized optimal control problems with semilinear elliptic equations and pointwise state constraints. European Numerical Mathematics and Advanced Applications, Lausanne, 08/2013.
Superconvergence properties of finite element discretized Neumann boundary control problems governed by semilinear elliptic equations. European Conference on Computational Optimization, Chemnitz, 07/2013.
Finite element error estimates for Neumann boundary control problems governed by semilinear elliptic equations. 84th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Novi Sad, 03/2013.
Elliptic Neumann boundary control problems: FE error estimates for quasi-uniform and graded meshes. 5th International Conference on High Performance Scientific Computing, Hanoi, 03/2012.
Neumann boundary control of semilinear elliptic equations: finite element discretization and error estimates. 24th Chemnitz FEM Symposium 2011, Holzhau, 09/2011.
A finite element error estimate on the boundary and its application to Neumann boundary control problems. Workshop on Numerical Methods for Optimal Control and Inverse Problems (OCIP), Garching, 03/2011.
Finite element error estimates on the boundary and its application to optimal control. 23rd Chemnitz FEM Symposium 2010, Lichtenwalde, 09/2010.
Finite element error estimates for Neumann boundary control problems on graded meshes. 81st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Karlsruhe, 03/2010.
Finite element error estimates for Neumann boundary control problems on graded meshes. 24th IFIP TC7 Conference on System Modelling and Optimization, Buenos Aires, 07/2009.
L^2-error estimates on the boundary for the Neumann problem in 2D. Chemnitzer Seminar zur Optimalsteuerung, Gerlosberg, 03/2009.
Talks on seminars
Introduction to finite element error estimates for optimal control problems with PDEs, Departement Mathematik und Informatik, Universität Basel, 04/2022.
hp-finite elements for fractional diffusion. Oberseminar Numerische Mathematik, Optimierung und Dynamische Systeme, Universität Bayreuth, 01/2020.
hp-finite elements for fractional diffusion. Forschungsseminar Optimale Steuerung und Inverse Probleme, Universität Duisburg-Essen, 04/2019.
hp-finite elements for fractional diffusion. Research Seminar: Mathematics of Computation, Rheinische Friedrich-Wilhelms-Universität Bonn, 09/2018.
hp-finite elements for fractional diffusion. Seminar Mathematical Optimization / Non-smooth Variational Problems and Operator Equations, WIAS Berlin, 06/2018.
Error estimates for normal derivatives on boundary concentrated meshes. Applied and Computational Mathematics Seminar, George Mason University, 02/2018.
hp-Finite Elements for Fractional Diffusion. Forschungsseminar Numerik, TU Chemnitz, 11/2017.
Spectral fractional operators with inhomogeneous boundary conditions, Technische Universität München, 03/2017.
An introduction to PDEs involving the spectral fractional Laplacian, Technische Universität München, 03/2017.
On properties of finite element discretized Dirichlet control problems in polygonal domains. Ecole polytechnique Paris, 12/2016.
Finite element error estimates for Dirichlet boundary control problems in polygonal domains. Applied and Computational Mathematics Seminar, George Mason University, 08/2016.
On properties of finite element discretized Dirichlet control problems in polygonal domains. Forschungsseminar Optimale Steuerung und Inverse Probleme, Universität Duisburg-Essen, 06/2016.
An introduction to PDEs involving the fractional Laplacian: analysis and finite element approximations. Seminar Angewandte Analysis und Numerische Mathematik, TU Graz, 04/2016.
An introduction to PDEs involving the fractional Laplacian: analysis and finite element approximations. Universität der Bundeswehr München, 03/2016.
Numerical analysis for Neumann boundary control problems governed by semilinear elliptic equations in polygonal domains. Numerical Analysis Seminar, University of Maryland, 12/2015.
Finite element error estimates for semilinear elliptic Neumann boundary control problems in polygonal domains. Applied and Computational Mathematics Seminar, George Mason University, 11/2015.
Discretization error estimates for Dirichlet boundary control problems. Seminar Angewandte Analysis und Numerische Mathematik, TU Graz, 05/2015.
Abschätzung des Diskretisierungsfehlers bei Dirichlet-Randsteuerungsproblemen. Forschungsseminar Numerik, TU Chemnitz, 05/2015.
Graded meshes in optimal control of elliptic partial differential equations. Forschungsseminar Optimale Steuerung und Inverse Probleme, Universität Duisburg-Essen, 06/2014.
Abschätzung des FE-Fehlers für semilineare Neumannrandsteuerungsprobleme. Kolloquium Angewandte Mathematik, Universität der Bundeswehr München, 02/2012.
Abschätzung des FE-Fehlers für semilineare Neumannrandsteuerungsprobleme. Forschungsseminar Nichtlineare Optimierung, Universität Duisburg-Essen, 01/2012.
L^2-error estimates on the boundary for the Neumann problem with application to optimal control. Seminar Nichtlineare Optimierung und Inverse Probleme, WIAS Berlin, 11/2010.
Effiziente rekursive Formulierung von Optimalsteuerungsproblemen für Industrieroboter. Kolloquium Wissenschaftliches Rechnen, Universität der Bundeswehr München, 11/2007.