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Philipp Zimmermann's Homepage

Philipp Zimmermann 

Curriculum Vitae


Institute of Mathematics

 École Polytechnique Fédérale de Lausanne (EPFL)

 Lausanne, Switzerland


E-Mail: philipp.zimmermann@ub.edu

Google Scholar: scholar.google.com/citations?user=YiJXYVoAAAAJhl=enoi=ao

Orcid: orcid.org/0000-0002-6791-1779 


Personal Information

Date of Birth: 23 May 1989

Citizenship: Swiss

Family: Father of three (2021, 2023, 2025)

Education

ETH Zürich Switzerland

Ph.D. in Mathematics 2019-2023

Advisors: Patrick Cheridito, Joaquim Serra.

Thesis: Inverse problems for variable coefficient nonlocal operators, defended March 8, 2023.


ETH Zürich Switzerland

M.Sc. in Interdisciplinary Sciences Major in Mathematics and Physical Chemistry 2017-2018

Advisors: Camillo De Lellis, Alessio Figalli.

Thesis: The generalized Caffarelli–Kohn–Nirenberg Theorem.


ETH Zürich Switzerland

B.Sc. in Interdisciplinary Sciences 2012-2017

Advisor: Gian-Michele Graf.

Thesis: Linear Response Theory and Influence Integrals for Open Quantum Systems.

Employment History

École Polytechnique Fédérale de Lausanne EPFL Switzerland

Postdoctoral Researcher (SNSF Postdoc.Mobility Return grant) 2026-present

Advisor: Joachim Krieger.


Universitat de Barcelona Spain

Postdoctoral Researcher (SNSF Postdoc.Mobility grant) 2023-2025

Advisor: Xavier Ros-Oton.


ETH Zürich Switzerland

Postdoctoral Researcher 2023

Advisors: Patrick Cheridito, Joaquim Serra.


ETH Zürich Switzerland

Ph.D. in Mathematics 2019-2023

Advisors: Patrick Cheridito, Joaquim Serra.


University of Regensburg Germany

Research Member 2018-2019

Advisor: Felix Finster.


ETH Zürich Switzerland

Teaching Assistant 2015

Physical Chemistry III: Molecular Quantum Mechanics

Lecturer: Beat Meier, Matthias Ernst


Audiovis Private School Switzerland

Teaching Assistant 2012-2013

Mathematics Teacher

Teaching Activities

2023: Course organizer and lecturer, Stochastics, ETH Zürich.

2022: Course organizer and teaching assistant, Mathematics III, ETH Zürich.

2021: Course organizer and lecturer, Analysis III, ETH Zürich.

2020: Course organizer and lecturer, Quantitative Risk Management, ETH Zürich.

2019: Seminar advisor, Theory and Applications of Machine Learning, ETH Zürich.

Research Interests

Partial differential equations; nonlocal operators; inverse problems and imaging; calculus of variations; harmonic and microlocal analysis; function space theory; geometry; deep learning theory.

Selected Articles

  1. Philipp Zimmermann. Calderón problem for nonlocal viscous wave equations: unique determination of linear and nonlinear perturbations. 2024. In: Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas 120.2 (2026): 31. ISSN: 1578-7303. DOI: https://doi.org/10.1007/s13398-025-01822-0.

  2. Cǎtǎlin I. Cârstea and Philipp Zimmermann. Reconstruction of coefficients in the double phase problem. 2025. arXiv: 2504.01691 [math.AP].

  3. Song-Ren Fu, Yongyi Yu, and Philipp Zimmermann. The Calderón problem for third order nonlocal wave equations with time-dependent nonlinearities and potentials. 2025. arXiv: 2411.08657 [math.AP].

  4. Yi-Hsuan Lin, Teemu Tyni, and Philipp Zimmermann. Optimal Runge approximation for nonlocal wave equations and unique determination of polyhomogeneous nonlinearities. In: Calculus of Variations and Partial Differential Equations 64, 280 (2025). ISSN: 0944-2669. DOI: https://doi.org/10.1007/s00526-025-03124-0.

  5. Yi-Hsuan Lin, Jesse Railo, and Philipp Zimmermann. The Calderón problem for a nonlocal diffusion equation with time-dependent coefficients. In: Revisita Matemática Iberoamericana 21.3 (2025), pp. 1129-1172. ISSN: 0213-2230. DOI: https://doi.org/10.2171/RMI/1539.

  6. Yi-Hsuan Lin, Gen Nakamura, and Philipp Zimmermann. The Calderón problem for the Schrödinger equation in transversally anisotropic geometries with partial data. 2024. arXiv: 2408.08298 [math.AP].

  7. Yi-Hsuan Lin, Teemu Tyni, and Philipp Zimmermann. Well-posedness and inverse problems for semilinear nonlocal wave equations. In: Nonlinear analysis 247 (2024), p. 113601. ISSN: /362-546X. DOI: https://doi.org/10.1016/j.na.2024.113601.

  8. Jesse Railo and Philipp Zimmermann. Low regularity theory for the inverse fractional conductivity problem. In: Nonlinear Analysis 239 (2024), p. 113418. ISSN: 0362-546X. DOI: https://doi.org/10.1016/j.na.2023.113418.

  9. Manas Kar, Jesse Railo, and Philipp Zimmermann. The fractional p-biharmonic systems: optimal Poincaré constants, unique continuation and inverse problems. In: Calculus of Variations and Partial Differential Equations 62.4 (2023), p. 130. ISSN: /944-2669. DOI: https://doi.org/1007/s00526-023-02468-9.

  10. Jesse Railo and Philipp Zimmerman. Fractional Calderón problems and Poincaré inequalities on unbounded domains. Journal of Spectral Theory 13.1 (2023). pp. 63-131. ISSN: 1664-039X. DOI: https://doi.org/10.4171/JST/444.

  11. Philipp Grohs, Fabian Hornung, Arnulf Jentzen, and Philipp Zimmermann. Space-time error estimates for deep neural network approximations for differential equations. In: Advances in Computational Mathematics 49.1 (2023), p. 4. ISSN: 1019-7168. DOI: https://doi.org/10.1007/s10444-022-09970-2.

Selected Talks

2026: TBA, 12th International Conference "Inverse Problems: Modeling and Simulation", Paradise Bay Hotel, Malta

2026: TBA, Inverse Problems in PDEs and Geometry, Cortona, Italy, May 24 - 29, 2026

2026: TBA, Inverse Problems Seminar UCI, Irvine, US, February, 2026

2024: The Calderón problem for nonlocal wave equations with polyhomogeneous nonlinearities, 14th AIMS Conference, NYU Abu Dhabi, United Arab Emirates.

2024: Inverse problem for nonlocal porous medium equations, 11th International Conference, Inverse Problems: Modeling and Simulation, Malta.

2024: The Calderón problem for nonlinear nonlocal wave equations, International Conference on Elliptic and Parabolic Problems, Italy.

2023: Inverse problem for nonlocal porous medium equations, International Zoom Inverse Problems Seminar, University of California, Irvine, USA.

2023: Fractional p-Calderón problems, 11th Applied Inverse Problems Conference, Göttingen, Germany.

2022: The fractional conductivity problem, Inverse Problems in Analysis and Geometry, University of Helsinki, Finland.

Prizes, Awards, Fellowships

2025: Postdoc.Mobility Return grant, SNSF (#239130). Project: The Calderón problem for nonlocal wave equations. Amount: CHF 133,362.

2023: Postdoc.Mobility grant, SNSF (#214500). Project: Nonlocal free boundary problems. Amount: CHF 115,552.

2019: Graduate student at the Zurich Graduate School in Mathematics (ETHZ/UZH).

2018:  DFG Fellowship for early career researchers.

Scientific Reviewing

Reviewer for SIAM J. Imaging Sciences, SIAM J. Mathematical Analysis, Nonlinear Analysis, Calculus of Variations and PDE, among others.

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