News: Starting from 2025, I will have a Temporary Position as Principal Investigator („Eigene Stelle“), funded by the German Research Foundation (DFG).
Title of my project: Arithmetic and geometry of the Kudla-Millson theta function. link
Funding received: 225K €.
Hosting university: TU Darmstadt.

I am a postdoc at TU Darmstadt in the research group of Prof. Dr. Jan Bruinier. Previously, I was a PhD student at GU Frankfurt under the supervision of Prof. Dr. Martin Möller.

• Shimura varieties and moduli spaces.
• Modular forms.
• Theta functions and theta lifts.
• Special cycles and equidistribution.

• Extremal divisors on moduli spaces of K3 surfaces (with I. Barros and L. Flapan).
  Preprint on arXiv (2025). link
• Lefschetz decompositions of Kudla-Millson theta functions (with J.H. Bruinier).
  Preprint on arXiv (2024). link
• Injectivity of the genus 1 Kudla-Millson lift on locally symmetric spaces (with I. Metzler).
  Preprint on arXiv (2023). link
• The Kudla-Millson lift of Siegel cusp forms (with P. Kiefer).
  Preprint on arXiv (2023). link
• Cones of orthogonal Shimura subvarieties and equidistribution.
  Manuscripta Math., vol. 175, 791–811 (2024). link
• Unfolding and injectivity of the Kudla-Millson lift of genus 1.
  Math. Zeitschrift, vol. 307, no. 10 (2024). link
• Cones of special cycles of codimension 2 on orthogonal Shimura varieties.
  Trans. Amer. Math. Soc., vol. 375, no. 10 (2022). link
• Strongly ambiguous Hilbert squares of projective K3 surfaces with Picard number one.
  Rend. Sem. Mat. Univ. Politec. Torino, vol. 77, no. 1 (2019). pdf (wird in neuem Tab geöffnet)

• extremal_rays , a SageMath program to compute extremal rays of the pseudoeffective cone of orthogonal modular varieties. Here (wird in neuem Tab geöffnet) is an explanation on how to use it.
• modcone_genus_2 , a SageMath program to compute modular cones. Here (wird in neuem Tab geöffnet) is an explanation on how to use it.
• My PhD thesis (wird in neuem Tab geöffnet) at GU Frankfurt, under the supervision of Prof. Dr. Martin Möller.
  Title: Cones of special cycles and unfolding of the Kudla-Millson lift.
  Final mark: Summa cum laude (with distinction).
  PhD period: September 2018 – March 2022.
  Date of defense: 15.3.2022.
  Its 4 chapters are now 4 different papers (see „Publications“). These papers provide revised versions and improvement of results of my thesis.

• International Workshop on Automorphic Forms link
  31 August – 5 September 2025, SwissMAP Research Station in Les Diablerets, Switzerland. Co-organized with C. Burrin, L. García and Y. Li.
• Winterseminar Manigod 2025, 8-15 March 2024, Manigod (France).
  Co-organized with T. Driscoll-Spittler, C. Lang and P. Siemon.
• International Seminar on Automorphic Forms link
  - summer semester 2025, organized with C. Burrin, L. García and Y. Li.
  - winter semester 2024/25, organized with C. Burrin, L. García and Y. Li.
  - summer semester 2024, organized with C. Burrin, L. García and Y. Li.
  - winter semester 2023/24, organized with C. Burrin, L. García and Y. Li.
  - summer semester 2023, organized with C. Burrin, Y. Li and C. Röhrig.
  - winter semester 2022/23, organized with C. Burrin, Y. Li and C. Röhrig.
• Winterseminar Manigod 2024, 8-15 March 2024, Manigod (France).
  Co-organized with T. Driscoll-Spittler, A. Güthge and K. Jakob.
• GAUS-AG “Superconnections, theta series, and period domains”, summer semester 2023. Program (wird in neuem Tab geöffnet)
  Hybrid reading seminar of the universities of Darmstadt, Frankfurt, Heidelberg and Mainz.
  Co-organized with J. Bruinier and Y. Li.
• Early Number Theory Researchers (ENTR) Workshop, 26-28 October 2022, Darmstadt. link
  Workshop for young researchers in Number Theory. Co-organized with G. Cesana, L. Kleinemeier, I. Metzler and A. Mono.
• GAUS-AG “The André–Oort Conjecture”, summer semester 2022. Program (wird in neuem Tab geöffnet)
  Hybrid reading seminar of the universities of Darmstadt, Frankfurt, Heidelberg and Mainz.
  Co-organized with J. Chen and J. Stix.

Lecturer of:

• Complex Manifolds – Winter semester 2024/2025.

Teaching assistant of:

• Automorphic Forms - Summer semester 2024
• Höhere Mathematik I – Winter semester 2023/2024.
• Mathematics III (for Electrotechnics) – Winter semester 2022/2023.
• Linear Algebra II – Summer semester 2022.
• Algebra – Winter semester 2020/21.
• Elementary Number Theory – Summer semester 2020.
• Linear Algebra I – Summer semester 2019.
• Complex Algebraic Geometry I – Winter semester 2018/19.