Contact
Address Technische Universität Berlin Felix Günther
Institut für Mathematik, MA 8-3
Straße des 17. Juni 136
10623 Berlin
Germany
Office 884
Office hours Thursdays 3:00 - 4:00 p.m.
E-mail This e-mail address is being protected from spam bots, you need JavaScript enabled to view it.
Telephone +49 - 30 - 314 - 25737
Fax +49 - 30 - 314 - 23 - 25737
Fields of interest
Discrete differential geometry Discrete complex analysis, discrete Riemann surfaces, integrable systems, smooth polyhedral surfaces, discrete curvature of polyhedral surfaces
Differential geometry Isometry groups of Lorentzian manifolds, homogeneous Lorentz spaces
Geometry Intersections of planar polygons
Academic vita
01/2022 – 06/2024 Postdoc at Technische Universität Berlin
SFB/TRR 109 Discretization in Geometry and Dynamics
Investigator in project A01: Discrete Riemann Surfaces
07/2018 – 12/2021 Postdoc at Technische Universität Berlin
Researcher in the MATH+ project EF2-1: Smooth discrete surfaces
SFB/TRR 109 Discretization in Geometry and Dynamics
Investigator in project C01: Discrete Geometric Structures Motivated by Applications and Architecture
01/2017 – 06/2018 Postdoc at Technische Universität Berlin and Université de Genève
DAAD Postdoctoral Researchers International Mobility Experience fellowship
Research project: Discrete holomorphic spinors on Riemann surfaces and the Ising model
09/2016 – 12/2016 Postdoc at Technische Universität Berlin
SFB/TRR 109 Discretization in Geometry and Dynamics
Investigator in project A01: Discrete Riemann Surfaces
06/2016 – 08/2016 Postdoc at Max Planck Institute for Mathematics in Bonn
01/2016 – 05/2016 Postdoc at Institut des Hautes Études Scientifiques in Bures-sur-Yvette
07/2015 – 12/2015 Postdoc at Erwin Schrödinger International Institute for Mathematical Physics in Vienna
01/2015 – 07/2015 Postdoc at Isaac Newton Institute for Mathematical Sciences in Cambridge
Visitor of the Random Geometry Programme
09/2014 – 01/2015 Postdoc at Institut des Hautes Études Scientifiques in Bures-sur-Yvette
09/2014 – 08/2016 2014–2016 Laureate of the European Post-Doctoral Institute
09/2014 PhD in Mathematics at Technische Universität Berlin
Thesis: Discrete Riemann Surfaces and Integrable Systems
Supervisor: Prof. Dr. Alexander I. Bobenko
Awarded with the Friedrich Hirzebruch-Promotionspreis 2016 by Studienstiftung des deutschen Volkes
06/2014 Research stay (one week) at Université de Genève
Invited by Prof. Dr. Stanislav Smirnov
11/2011 – 12/2011 Research stay (two weeks) at Hausdorff Research Institute for Mathematics
Junior Hausdorff Trimester Program in Differential Geometry
10/2011 – 09/2014 Doctoral student in Mathematics at Technische Universität Berlin
Supervisor: Prof. Dr. Alexander I. Bobenko
Topic: Discrete complex analysis
Fellow of Deutsche Telekom Stiftung and Studienstiftung des deutschen Volkes
08/2011 Diploma in Mathematics at Humboldt-Universität zu Berlin
Supervisor: Prof. Dr. Helga Baum
Thesis: Isometry groups of Lorentzian manifolds of finite volume and The local geometry of compact homogeneous Lorentz spaces
Award for the Diploma thesis by German Mathematical Society
05/2010 – 04/2011 Student research assistant at Technische Universität Berlin
Supervisor: Prof. Dr. Alexander I. Bobenko
Topic: Integrable systems
09/2009 – 02/2010 Exchange student at Swiss Federal Institute of Technology Zurich
Subjects: Mathematics, Theoretical Computer Sciences, Theoretical Physics
Supported by Erasmus Program and Studienstiftung des deutschen Volkes
05/2009 – 07/2009 Student research assistant at Technische Universität Berlin
Supervisor: Prof. Dr. Alexander I. Bobenko
Topic: Hyperbolic geometry
10/2008 – 09/2014 Member of Berlin Mathematical School
Phase I student till 09/2011, Phase II student till 09/2014
10/2007 – 08/2011 Studies of Mathematics at Humboldt-Universität zu Berlin
Minor: Physics
Fellow of Studienstiftung des deutschen Volkes
06/2007 Abitur at Herder-Gymnasium in Berlin
Advanced courses: Mathematics, Physics
Awarded with the Dr. Habbena-Preis by Bezirksamt Charlottenburg-Wilmersdorf and with the Schülerpreis of the Physikalischen Gesellschaft zu Berlin
Publications and preprints
2023 The Discrete Theorema Egregium
With Thomas F. Banchoff
Published in the American Mathematical Monthly, 18 pages
2020 Smooth polyhedral surfaces
With Caigui Jiang and Helmut Pottmann
Published in Adv. Math. 363, 2020, 107004, 31 pages
2019 The Gauss map of polyhedral vertex stars
With Thomas F. Banchoff
Preprint arXiv:1909.09184
2017 Winkeltreue zahlt sich aus
Published in Snapshots of Modern Mathematics from Oberwolfach, 1/2017, pp. 1-11
2017 Discrete Riemann surfaces based on quadrilateral cellular decompositions
With Alexander I. Bobenko
Published in Adv. Math. 311, 2017, pp. 885-932
2016 Measuring and controlling fairness of triangulations
With Caigui Jiang, Helmut Pottmann, and Johannes Wallner
Published in Advances in Architectural Geometry 2016, vdf Hochschulverlag AG an der ETH Zürich, 2016
Best paper award of the conference AAG 2016
2016 Discrete complex analysis on planar quad-graphs
With Alexander I. Bobenko
Published in Advances in Discrete Differential Geometry, Springer, 2016, pp. 55-128
2015 The local geometry of compact homogeneous Lorentz spaces
Published in J. Geom. Phys. 89, 2015, pp. 60-73
2014 Discrete Riemann Surfaces and Integrable Systems
PhD thesis, Technische Universität Berlin, School II – Mathematics and Natural Sciences, Department of Mathematics
2013 Discrete complex analysis – the medial graph approach
With Alexander I. Bobenko
Published in Actes des rencontres du CIRM 3 no. 1: Courbure discrète: théorie et applications (2013), pp. 159-169
2013 On a game on graphs
Joint with Irina Mustaţă
Preprint arXiv:1302.5711
2012 Discrete complex analysis on quad-graphs
Joint with Alexander I. Bobenko
Research report published in Oberwolfach Reports No. 34/2012, pp. 2091-2094
2012 On discrete integrable equations with convex variational principles
With Alexander I. Bobenko
Published in Lett. Math. Phys. 102(2), 2012, pp. 181-202
Updated version arXiv:1111.6273
2011 Isometry groups of Lorentzian manifolds of finite volume and The local geometry of compact homogeneous Lorentz spaces
Diploma thesis, Humboldt-Universität zu Berlin, Faculty of Mathematics and Natural Sciences II, Department of Mathematics
ISBN: 978-3-656-01734-9 (Book); 978-3-656-01707-3 (eBook)
Teaching
Winter 2023/2024 Mathematics for Physicists I
Winter 2023/2024 Circle 11a of Mathematische Schülergesellschaft
Summer 2023 Circle 10a of Mathematische Schülergesellschaft
together with Carl Lutz
Winter 2022/2023 Circle 10a of Mathematische Schülergesellschaft
together with Carl Lutz
Winter 2022/2023 Playful mathematics for Ukrainian refugee children
together with Ekaterina Eremenko
August 2022 Working group: The fascinating world of discrete differential geometry at the summer academy of Studienstiftung des deutschen Volkes in Leysin
together with Carl Lutz
Summer 2022 Circle 9b of Mathematische Schülergesellschaft
together with Carl Lutz
Summer 2022 Playful mathematics for Ukrainian refugee children
together with Ekaterina Eremenko
Winter 2021/2022 Circle 9b of Mathematische Schülergesellschaft
together with Carl Lutz
Summer 2021 Circle 8b of Mathematische Schülergesellschaft
together with Carl Lutz
Winter 2020/2021 Geometry III - Riemann Surfaces: Classical and Discrete
Advanced course of the Berlin Mathematical School
Winter 2020/2021 Circle 8b of Mathematische Schülergesellschaft
together with Carl Lutz
Summer 2020 Circle 7b of Mathematische Schülergesellschaft
together with Carl Lutz
Winter 2019/2020 Circle 7b of Mathematische Schülergesellschaft
together with Carl Lutz
August 2015 Working group 3: Discrete differential geometry at the summer academy of Studienstiftung des deutschen Volkes in Leysin
together with Lara Skuppin; scientific program
Summer 2014 Circle 7b of Mathematische Schülergesellschaft
together with Prof. Dr. Alexander I. Bobenko
Winter 2013/2014 Circle 7b of Mathematische Schülergesellschaft
together with Prof. Dr. Alexander I. Bobenko
Summer 2013 Mathematical Circle 5-6
together with Prof. Dr. Alexander I. Bobenko
Winter 2012/2013 Complex Analysis II / Geometry III: Riemann Surfaces: Classical and Discrete
Lecturer: Prof. Dr. Alexander I. Bobenko
Winter 2012/2013 Mathematical Circle 5-6
together with Prof. Dr. Alexander I. Bobenko
Activities
2023 – present Trustee (Vertrauensdozent) of Otto-Benecke-Stiftung e.V.
2020 – 2025 Fellow of the Young Academy Mainz, Academy of Sciences and Literature Mainz
2019 – 2024 Fellow of the Young ZiF, Center for Interdisciplinary Research in Bielefeld
2015, 2022 Lecturer of two-week courses on discrete differential geometry at summer academies for an interdisciplinary group of students in Leysin, organized by Studienstiftung des deutschen Volkes
2014 Lecturer at MINT-Forscherwerkstatt, organized by Deutsche Telekom Stiftung, Jugend forscht, and START-Stiftung
2013 Lecturer at Math Kangaroo International Summer Camp Werbellinsee
2013, 2014, 2019 Presenter at Long Night of Sciences at Technische Universität Berlin
2012 – present Coach at Jugend trainiert Mathematik
2012 – present Teacher of a math circle at Technische Universität Berlin
2008 – present Selection of problems and coordination of correction at Berliner Tag der Mathematik
2007 – 2009 Teacher at Mathematische Schülergesellschaft "Leonhard Euler"
2007 – present Corrector and coach at Mathematical Olympiads in Berlin
Science communication and miscellaneous
2020 Interview on my membership in the Young Academy Mainz (in German)
2020 Corona und Digitalisierung: Corona Chat (Young Academy Mainz; in German)
2020 FameLab: Bananen und Mathematik (Potsdam; in German)
2019 Opening ceremony of the 7th Heidelberg Laureate Forum (Heidelberg)
2019 FameLab: Use your brain! (Potsdam)
2018 TEDxLSE: How the Unlikely Becomes Likely -- The Math Behind Destiny (London)
2018 Georg Cantor -- Der Entdecker der Unendlichkeiten (in German)
Documentary film by Ekaterina Eremenko that was produced in collaboration with the SFB/TRR 109 for the MDR
2017 FameLab: Use your brain! (Basel)
2017 The math behind... Conformal Maps (SIAM Math Matters, Apply It!)
2016 How conformal maps enter our lives (SIAM News Blog)
2016 Science Slam Finale: Winkeltreue zahlt sich aus (Vienna; in German)
2015 Science Slam: Winkeltreue zahlt sich aus (Vienna; in German)
2015 The math behind... Smoke Animation (SIAM Math Matters, Apply It!)
2014 Breaking the Wall of Discrete Complex Analysis (Falling Walls Lab Finale in Berlin)
2014 Science Slam: Diskreter Umgang mit krummen Sachen (Karlsruhe; in German)
2013 Science Slam: Kompakte homogene Lorentz-Mannigfaltigkeiten (Berlin; in German)
2013 The math behind... Freeform Architecture (SIAM Math Matters, Apply It!)
2012 Science Slam: Kompakte homogene Lorentz-Mannigfaltigkeiten (Göttingen; in German)
2011 Interview on my diploma thesis (in German)
2009 On the cardinalities of the set of integer sequences and the set of sequences of real numbers (in German)
2008 Construction of a Jordan set which is not a Borel set inside a Borel set of measure zero in n-dimensional Euclidean space (in German)
Based on the lecture Introduction into Measure and Integration Theory (in German) of Prof. Dr. Helga Baum
2007 Metamorphoses (Ovid) (in German)
Dr. Habbena-Preis by the Bezirksamt Charlottenburg-Wilmersdorf
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