## About Me

Since June 2021, I am an assistant professor at University of Twente in the Discrete Mathematics & Mathematical Programming group. Since September 2023, I am a guest professor at FU Berlin as acting head of the Discrete Geometry and Topological Combinatorics group substituting for Günter Ziegler.CONTACT: g.((surname))(at)utwente.nl OR ((prename)).((surname))(at)math.fu-berlin.de

- Broadly interested in the interplay between geometric and combinatorial objects with applications in optimization and data science
- Improvement of teaching via modern methods
- Sustainability in research and society

### Short CV

- Long-term participant HIM Trimester Program in Bonn, Sept 2021 - Dec 2021
- Substitute Professor at Universität Kassel, Oct 2020 - Mar 2021
- Postdoc at Department of Mathematics, London School of Economics, Funded by the ERC Starting Grant of László A. Végh (no. 757481), Jan 2019 - Sept 2020
- Postdoc at EPFL (with Friedrich Eisenbrand), 2018
- Ph.D. student at TU Berlin (with Michael Joswig), 2013 - 2017
- Diploma in mathematics, Universität Würzburg (Supervisor Peter Müller), 2008 - 2012

## News

- I started as acting head of the Discrete Geometry and Topological Combinatorics group at FU Berlin substituting for Günter Ziegler.
- Together with Mateusz Skomra, we are working on the project
*Understanding games and linear programming through tropical geometry*(description) with our intern Mihir More. - We are welcoming a new PhD student, Matthew Maat, co-supervised together with Tom van Dijk!

## Research

### Publications

- arxiv)(publication)
*Selecta Mathematica (2024)*

with Marcel Celaya, Chi Ho Yuen ( -
arxiv)(conference)
*CSL (2024)*

with Tom van Dijk, Matthew Maat ( - journal)(arxiv)
*The Electronic Journal of Combinatorics (2023)*

with Ben Smith ( - journal)(arxiv)
*Algebraic Combinatorics (2023)*

with Marie-Charlotte Brandenburg, Rainer Sinn ( -
arxiv)(conference)
*ICLR 2023*

with Christian Haase, Christoph Hertrich ( - arxiv)(conference)
*IPCO 2023*

with Edin Husić, Zhuan Khye Koh, László A. Végh ( - journal)(arxiv)
*Discrete & Computational Geometry (2023)*

with Raman Sanyal ( - arxiv)(conference)
*FOCS 2022*

with Xavier Allamigeon, Daniel Dadush, Bento Natura, László A. Végh ( - journal)(arxiv)(conference)
*FPSAC 2022*

with Michael Joswig, Dante Luber, Jorge Alberto Olarte ( - conference)(arxiv)(video)

MFCS 2022

with Zhuan Khye Koh ( - journal)(arxiv)(video)
*Journal of the London Mathematical Society (2022)*

with Marcel Celaya, Chi Ho Yuen ( - arxiv)(conference)
*ACM-SIAM Symposium on Discrete Algorithms 2022*

with Edin Husić, Ben Smith, László A. Végh ( -
publication)(arxiv)(slides)
*Research in the Mathematical Sciences, 7(30) (2020)*

with Matthias Schymura
( - publication)(arxiv)(slides)
*Advances in Mathematics, 370 (2020), 107232*

with Ben Smith ( - publication)(arxiv)
*The Electronic Journal of Combinatorics (2020)*

( - publication)(arxiv)(slides)

*11th Innovations in Theoretical Computer Science Conference (ITCS 2020), LIPIcs, Volume 151 (2020), pp. 24:1-24:35*

with László A. Végh ( - publication)(arxiv)(slides)
*SIAM J. Discrete Math., 34(2) (2020), 1172-1191.*

with Michael Joswig ( - publication)(arxiv)
*Mathematical Aspects of Computer and Information Sciences: 6th International Conference (MACIS 2015), Revised Selected Papers, LNCS Volume 9582 (2016), pp 429-445*

with Michael Joswig, Benjamin Lorenz, Benjamin Schröter ( - publication)
*Linear Algebra Appl. 501 (2016), 304-343.*

with Michael Joswig
( - publication)(game homepage)
*33rd International Symposium on Computational Geometry (SoCG 2017), LIPIcs, Volume 77 (2017), pp 66:1--66:5*

with Michael Joswig, Benjamin Lorenz, Rico Raber (

### Preprints

- arxiv)

with Marie-Charlotte Brandenburg, Guido Montúfar ( - arxiv)

with Marie-Charlotte Brandenburg, Ben Smith ( - arxiv)(video)

with Mateusz Skomra (

### Thesis

(publication)(slides)### Further Talks

### Posters

- Poster for 7ECM (July 18 – 22, 2016)
- Poster for Einstein Workshop Discrete Geometry and Topology (March 13-16, 2018)

### Further Material

- Free open source course material for Applied (Abstract) Algebra

## Current Teaching

- Vorlesung / Projekt Mathematik & Nachhaltigkeit
- Vorlesung Geometrie
- Research Seminar of the Group
*Discrete Geometry and Topological Combinatorics*

## Former Teaching

### Winter 2023/2024

- Discrete Geometry III
- (Pro)Seminar Mathematik & Nachhaltigkeit
- (Pro)Seminar Mathematik, KI & Lehre
- Research Seminar of the Group
*Discrete Geometry and Topological Combinatorics*

### 2021 - 2023

see list @UT### Winter 2020/2021

- Lineare Algebra (E-Technik, Informatik, W-Ing E-Technik, Mechatronik)
- Fachwissenschaftliches Seminar III für die Lehrämter Grundschule
- Matroide und ihre Anwendungen

### Before 2021

- Galois Theory (WiSe 2018)
- Anneaux et corps (Rings and fields, SoSe2018)
- Computerorientierte Mathematik I & II (WiSe2013, WiSe2014, SoSe2015, WiSe2015, SoSe2016, SoSe2017, WiSe2017)
- Topologie (WiSe2016)
- Diskrete Geometrie I (SoSe2014)
- Funktionentheorie I (SoSe2013, Universität Würzburg)

## Some supervised theses

## Events

### Outreach

- Girls' Day 2024
- Festvortrag bei der Landesrunde der 63. MO in Bayern (slides)
- Pi-Day 2024 am Käthe-Kollwitz-Gymnasium (slides)

### Upcoming

### Some past events

- Dagstuhl Seminar - Stochastic Games
- Democracy in Engineering Education - SEFI Spring School 2024
- Graduate Meeting in Applied Algebra and Combinatorics (Invited Minicourse)
- Workshop on Matroid-Constrained Optimization Problems
- Combinatorial Coworkspace
- Geometric, Algebraic, and Topological Combinatorics (Oberwolfach)
- Emléktábla Workshop (13/14)
- SIAM Conference on Applied Algebraic Geometry (AG23)
- LMS Workshop on Tropical Mathematics
- Climathics Workshop
- Eleventh Cargese Workshop on Combinatorial Optimization
- Polytopes in Paris and more: Geometry, Combinatorics and Optimization
- Combinatorial Coworkspace
- Discrete Optimization, Hausdorff Research Institute for Mathematics
- DMV Jahrestagung 2020, September 14-17, 2020; with our minisymposium on Discrete Optimization!
- The 21st Conference on Integer Programming and Combinatorial Optimization (IPCO21), June 8-10, 2020, London (via ZOOM)
- 11th Innovations in Theoretical Computer Science (ITCS), January 12-14, 2020
- ACM-SIAM Symposium on Discrete Algorithms (SODA20), January 5-8, 2020
- IGAFIT Workshop for Algorithms Postdocs in Europe (AlgPiE by IGAFIT 2019), October 14 - 18, 2019
- Discrete geometry with a view on symplectic and tropical geometry, September 23 - 27, 2019 (slides)
- SIAM Conference on Applied Algebraic Geometry, July 9 - 13, 2019; Co-organization of session “Computational aspects of tropical geometry”

## Further Interests

Software development

polymake

Educational Game

MatchTheNet

Math Olympiad

I am involved in the organisation of the mathematical olympiad in Bavaria. For more information see: