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Fabian Rodatz (he/him)
Mathematisches Institut
Heinrich-Heine-Universität
D - 40225 Düsseldorf
Office: 25.22.03.66
Email: fabian(dot)rodatz(at)hhu(dot)de
Phone: +49 (0)211 81-13205
See also my HHU webpage.
I am a PhD student in mathematics at the Heinrich-Heine University of Düsseldorf under the supervision of Marcus Zibrowius (HHU) and Jens Hornbostel (BUW). As such, I am part of the research training group GRK 2240: Algebro-Geometric Methods in Algebra, Arithmetic and Topology, which is funded by the Deutsche Forschungsgesellschaft (DFG).
Academic Interests: I am interested in hermitian K-Theory, triangular Witt groups and the McKay Correspondence.
Before starting my PhD, I completed my bachelor's and master's degree at the University of Göttingen. You can find my academic CV here.
Talks:
"Picard groups, Brauer groups, and Hilbert 90", Oberseminar Algebraic Geometry: Étale cohomology, November 2025.
"ADE classification", GRK 2240 Non-Professor Meeting, October 2025. (Slides)
"Splitting Problem of (topological) Vector Bundles", GRK 2240 Retreat, October 2025. (Slides)
"The Admissible Topology", GRK 2240 Workshop: Rigid Geometry with a View Towards the Drinfel'd Upper Half-Plane, May 2025.
"Coxeter Groups", Oberseminar Algebra und Geometrie: Buildings and classical groups, April 2025.
"The first Sigma-invariant", Advanced Seminar on Group Theory: Braid Groups & Sigma-Invariance, January 2025.
"Introduction to Scissor Congruences", GRK 2240 Workshop: Scissor Congruences and Group Cohomology, November 2024.
"Group Cohomology: Cup Product and Cyclic Groups", Oberseminar Algebra und Geometrie: Local class field theory, October 2024.
If you are interested in my notes for these talks, feel free to contact me via e-mail.
Activities
Will attend the "Darstellungstheorietage 2025", Düsseldorf, 13-14th November 2025
Attended the "Kleine AT Workshop", Bonn, 10th October 2025
Attended the "GRK 2240 Retreat 2025", Davensberg, October 2025
Attended the Summer School "Representations of finite groups and reductive groups", Wuppertal, 01-05th September 2025
Attended the "35th NRW Topology Meeting", Osnabrück, 23-24th May 2025.
Attended the "GRK 2240 Retreat 2024", Möhnesee, September 2024
Organization
GRK 2240 Workshop on "The McKay Correspondence", WiSe25/26, organized together with Clotilde Gauthier.
GRK 2240 Retreat 2025, Oktober 2025, organized together with Adrian Baumann, Mikel Eguzki Garciarena, Julian Reichardt.
Teaching
Winter 2023: Introduction to Category Theory, Master level - Tutor (tutorials; correction of assignments)
Winter 2022: Algebra, Bachelor level - Tutor (tutorials; correction of assignments)
Winter 2021: Differenzial- und Integralrechnung I, Bachelor level - Tutor (tutorials; correction of assignments)
Summer 2021: Analytische Geometrie und Lineare Algebra II, Bachelor level - Tutor (tutorials; correction of assignments)
Winter 2020: Analytische Geometrie und Lineare Algebra I, Bachelor level - Tutor (tutorials; correction of assignments)
Winter 2020: Mathematischer Vorkurs: Biologie/Geo-/Forst-/Agrarwissenschaften, Bachelor level - Assistant (preparation of lectures, assignments and solutions)
Winter 2019: Mathematisches Propädeutikum, Bachelor level - Tutor (tutorials; correction of assignments)
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