Dr. Andrea Thevis

This website will no longer be updated. Please visit my new website.

I recently finished my PhD which was supervised by Gabriela Weitze-Schmithüsen (Saarland University) and Alice Niemeyer (RWTH Aachen). My PhD thesis is available here. The project was funded by the SFB-TRR 195 Symbolic Tools in Mathematics and their Application. I was a member of the Integrated Research Training Group of the SFB-TRR 195 and a scholar of the German Academic Scholarship Foundation. Since April 2022 I have been a postdoctoral researcher at Goethe University Frankfurt.

My primary research interests are in geometry and group theory. During my PhD, I liked thinking about questions that connect a geometric setting with group theory. I mainly worked with translation surfaces (in particular square-tiled surfaces) and \(p\)-groups.

Preprints:

• Veech Groups and Sums of Lyapunov Exponents of \(2\)-Origamis (in preparation)
• Regular origamis with totally non-congruence groups as Veech groups, Proceedings of the 3rd BYMAT Conference 2020, [arXiv]
• Strata of \(p\)-Origamis (with Johannes Flake, 2020), Mathematische Nachrichten (in press), [arXiv]

Talks and Poster Presentations

• November 2021: Women in Algebra and Symbolic Computations II, Bad Dürkheim
  Talk: \(T_2\)-systems and normal origamis
• July 2021: IRTG-Seminar of the SFB-TRR 195 (online)
  Talk: On the geometry of normal square-tiled surfaces
• June 2021: Seminar Groups and Representations, TU Kaiserslautern (online)
  Talk: Square-tiled surfaces, normal covers and cylinder decompositions
• June 2021: Seminar of Algebra and Number Theory, Universität des Saarlandes (online)
  Talk: Square-tiled surfaces, normal covers and cylinder decompositions
• June 2021: ART-Graduate Student Seminar, RWTH Aachen (online)
  Talk: Square-tiled surfaces, normal covers and cylinder decompositions
• April 2021: American Graduate Student Algebraic Geometry Seminar (online)
  Talk: On the interaction of normal origamis and group theory
• March 2021: Graduate student meeting of the German Academic Scholarship Foundation (online)
  Talk: Origamis - surfaces beyond the art of paper folding
  
• February 2021: PPRT II, RWTH Aachen (online)
  Talk: On the interaction of regular origamis and group theory
• December 2020: Bringing Young Mathematicians Together 2020, online
  Talk: \(p\)-Origamis: Strata, Veech Groups and sums of Lyapunov Exponents
• November 2020: Geometry Graduate Colloquium, ETH Zürich (online)
  Talk: Square-tiled surfaces: A class of extraordinary translation surfaces
• September 2020: Fourth annual conference of the SFB-TRR 195, Kaiserslautern (online)
  Talk: \(p\)-Origamis: Strata, Veech Groups and sums of Lyapunov Exponents
• December 2019: Weihnachtsworkshop on Geometry and Number Theory, KIT, Karlsruhe
  Talk: Strata and Veech groups of \(p\)-origamis
• December 2019: Women in Algebra and Symbolic Computations, Bad Dürkheim
  Talk: Strata and Veech groups of \(p\)-origamis
• December 2019: Nikolaus Conference, RWTH Aachen
  Talk: A Connection between Origamis and the Theory of \(p\)-Groups
• September, 2019: Third annual meeting of the SFB-TRR 195, Universität des Saarlandes
  Poster: \(p\)-Origamis: Strata and Veech Groups
• July, 2019: Summer School Matrix Group Recognition, RWTH Aachen
  Poster: \(p\)-Origamis: Strata and Veech Groups
• July, 2018: IRTG-Seminar of the SFB-TRR 195, Kaiserslautern
  Talk: Strata of \(p\)-origamis
• July, 2018: Seminar of Algebra and Number Theory, Universität des Saarlandes
  Talk: Strata of \(p\)-origamis

Organization

• September 14 - 16, 2020: The Young Mathematicians Symposium of the Greater Region 2020,
  TU Kaiserslautern (organized together with M. Diehl, N. Gamage, V. Kirekod, S. Mudiyanselage,
  S. Sanon, A. Sherly, M. Volz, L. Loosveldt)
• September 2 - 6, 2019: Summer School Around Moduli Spaces, Universität des Saarlandes
  (organized together with Gabriela Weitze-Schmithüsen, Christian Steinhart)
• September 10 - 13, 2018: Joint Block Seminar of the IRTG of the SFB TRR 195, Schloss Dagstuhl
  (organized together with Simon Schmidt)

Conferences

• July 13 - 16, 2020: International Congress on Mathematical Software 2020 (online)
• June 1 - 14, 2020: Nearly Carbon Neutral Geometric Topology Conference (online)
• April 20 - 24, 2020: Dynamics on flat surfaces and their moduli spaces, HIM, Bonn (cancelled)
• March 16 - 19, 2020: Interactions between group theory, number theory, combinatorics and geometry, Isaac Newton Institute for Mathematical Sciences, Cambridge, UK
• January 13 - 17, 2020: Winter School on Dynamics: Topology and Numbers, HIM, Bonn
• November 18 - 22, 2019: Holomorphic Differentials in Mathematics and Physics, MSRI, Berkeley, USA
• September 21 - 27, 2019: Heidelberg Laureate Forum, Heidelberg
• August 15 - 23, 2019: Holomorphic Differentials in Mathematics and Physics, MSRI, Berkeley, USA
• May 30 - June 6, 2019: Houston Summer School in Dynamical Systems, University of Houston, USA
• February 18 - 21, 2019: Retreat SFB-TRR 195, Bad Münster am Stein
• February 11 - 15, 2019: Enumerative Geometry and Modular Forms, Goethe Universität Frankfurt
• December 17 - 19, 2018: Weihnachtsworkshop on Geometry and Number Theory, KIT, Karlsruhe
• September 17 - 21, 2018: GAP Days Fall 2018, Siegen
• June 11 - 29, 2018: Teichmüller Dynamics and Mapping Class Groups, Grenoble, France
• March 19 - 23, 2018: Teichmüller Dynamics, Warwick, UK
• December 18 - 20, 2017: Weihnachtsworkshop on Geometry and Number Theory, Universität des Saarlandes
• September 18 - 22, 2017: Summer school: Permutation Groups, Marienheide
• August 20 - September 2, 2017: Elliptic Curves and the BSD-Conjecture, Sankt Johann, Italy
• October 1 - 3, 2015: Local-Global Principles and Their Obstructions, UPenn, Philadelphia, USA
• September 7 - 11, 2015: Summer school: Representations of Algebraic Groups and Lie Algebras in Characteristic p, Marienheide
• August 3 - 16, 2014: Origamis and Group Theory, Neubeuern

Teaching:

Saarland University:

• Winter 2018/19: Lineare Algebra I (Teaching Assistant of Prof. Gabriela Weitze-Schmithüsen)

RWTH Aachen:

• Winter 2021/22: Hands-on Workshop Analysis and Linear Algebra
• Summer 2021: Begleitpraktikum II
• Winter 2020/21: Lineare Algebra I (Teaching Assistant of Prof. Alice Niemeyer)
• Winter 2015/16: Analysis I (Teaching Assistant of Prof. Sebastian Walcher)
• Summer 2014: Stochastics I (Teaching Assistant of Prof. Maria Kateri)

Outreach

I helped organizing various annual outreach events for high school students at Saarland University:

• competition "Tag der Mathematik",
• workshop during the UniCamp,
• stand of the math department at the Open House.

As a mentor in the program MentoMINT, I supported female high school students interested in math and sciences when choosing their field of study after high school.