Short CV

• 2023– now Post-Doc @ University Of Vienna
• 2021–2023 Post-Doc @ Georg-August-Universität Göttingen
• 2017–2021 PhD @ University Of Vienna
• 2016–2018 Mathematics and Models @ riskine GmbH
• 2014–2017 MSc Applied Mathematics @ University Of Vienna
• 2011–2014 BSc Mathematics @ University Of Vienna

Publications

1. Trefftz Discontinuous Galerkin discretization for the Stokes problem
   Philip L. Lederer, Christoph Lehrenfeld, PS
   Numer. Math., 2023 [pdf,cite]
2. On polynomial Trefftz spaces for the linear time-dependent Schrödinger equation
   Sergio Gómez, Andrea Moiola, Ilaria Perugia, PS
   Appl. Math. Lett., 2023 [pdf,cite]
3. Unfitted Trefftz discontinuous Galerkin methods for elliptic boundary value problems
   Fabian Heimann, Christoph Lehrenfeld, PS, Henry von Wahl
   ESAIM: M2AN, 2022 [pdf,cite]
4. A new T-compatibility condition and its application to the discretization of the damped time-harmonic Galbrun’s equation
   Martin Halla, Christoph Lehrenfeld, PS
   arXiv:2209.01878, 2022 [pdf,cite,slides]
5. Robust finite element discretizations for a simplified Galbrun’s equation
   Tilman Alemán, Martin Halla, Christoph Lehrenfeld, PS
   eccomas2022, 2022 [pdf,cite]
6. NGSTrefftz: Add-on to NGSolve for Trefftz methods
   PS
   J. Open Source Soft., 2022 [pdf,cite,slides]
7. Embedded Trefftz discontinuous Galerkin methods
   Christoph Lehrenfeld, PS
   Int. J. Numer. Methods Eng., 2022 [pdf,cite,slides]
8. A space-time quasi-Trefftz DG method for the wave equation with piecewise-smooth coefficients
   Lise-Marie Imbert-Gérard, Andrea Moiola, PS
   Math. Comp., 2020 [pdf,cite]
9. An entropy structure preserving space-time formulation for cross-diffusion systems: Analysis and Galerkin discretization
   Marcel Braukhoff, Ilaria Perugia, PS
   SIAM J. Numer. Anal., 2020 [pdf,cite,slides]
10. Tent pitching and Trefftz-DG method for the acoustic wave equation
    Ilaria Perugia, Joachim Schöberl, PS, Christoph Wintersteiger
    Comput. Math. Appl., 2020 [pdf,cite]

Read more

Co-Supervised Master’s theses

• Embedded Trefftz Trace DG Methods for PDEs on unfitted Surfaces, Erik Schlesinger, 2023 [http]
• Robust Finite Element Discretizations for a PDE arising in Helioseismology, Tilman Alemán, 2022 [http]

Teaching

• 2022WS VO Partielle Differentialgleichungen
• 2022SS Mathematisch orientiertes Programmieren
• 2021WS Einführung in Python und Computeralgebra
• 2019SS UE Analysis für PhysikerInnen II
• 2018WS UE Lineare Algebra für PhysikerInnen

Research visits

• University of Pavia, Pavia, Italy 18/03/24 → 22/03/24,
  working with A. Moiola, S. Gómez, and C. Perinati
• Research in Pairs, Trento, Italy
  25/06/23 → 01/07/23,
  working with A. Moiola and L.-M. Imbert-Gérard
• Kyoto University, Kyoto, Japan 08/03/20 → 12/04/20,
  working with K. Svadlenka and G. Favre
• University of Pavia, Pavia, Italy 01/10/19 → 29/02/20,
  working with A. Moiola

Conferences and Workshops

2024

• Waves
  30/06 → 05/07 Berlin, DE
• 5th NGSolve User Meeting,
  17/06 → 19/06 Vienna, Aut
• Banff CMO: Contemporary Challenges in Trefftz Methods
  12/05 → 17/05 Oaxaca, MX

Read more

Posts

• Oct 16, 2023 - git dark magic
• Oct 11, 2022 - Some debugging notes
• Sep 13, 2022 - Softwave docu using Sphinx
• Jan 21, 2022 - Pypi - creating a python package
• Nov 01, 2021 - NGSTrefftz on the cluster in Göttingen
• Sep 07, 2021 - Quasi-Trefftz DG for the wave equation
• Jun 08, 2021 - Boulderproblem
• Oct 10, 2020 - Space-time Maxwell-Stefan equation
• Jan 23, 2020 - How to create this website
• Oct 11, 2019 - Space-time Trefftz-DG on tent pitched meshes