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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 derived categories, 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.
Publications and Preprints
"A bicategorical perspective on Steinberg algebras", 2026, Joint work with Ralf Meyer & Taufik Yusof, [arXiv]
Talks:
"The Derived McKay Correspondence and Duality", GRK 2240 Non-Professor Meeting, June 2026.
"Tannakian categories", Oberseminar Algebraic Geometry: The Nori fundamental group scheme, May 2026.
"Why algebraic K-theory?", GRK 2240 Workshop: Cyclic Homology, April 2026.
"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 and Geometry: 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 and Geometry: 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
Going to attend the "GRK 2240 Retreat 2026", Wesel, Germany, 14-16th September 2026.
Going to attend the GRK 2240 Summer School "Recent Developments in Arithmetic and Algebraic Geometry in Positive Characteristic", Wuppertal, Germany, 31st August - 04th September 2026.
Going to attend the Mini Course "Homotopy theory, derived categories, and quadratic forms", Lens, France, 29th June - 3rd July 2026.
Attended the Workshop "Homological Algebra in Algebraic Geometry and Representation Theory", Salerno, Italy, 02-06th March 2026.
Attended the "Darstellungstheorietage 2025", Düsseldorf, Germany, 13-14th November 2025.
Attended the "Kleine AT Workshop", Bonn, Germany , 10th October 2025.
Attended the "GRK 2240 Retreat 2025", Davensberg, Germany, 06-08th October 2025.
Attended the Summer School "Representations of finite groups and reductive groups", Wuppertal, Germany, 01-05th September 2025.
Attended the "35th NRW Topology Meeting", Osnabrück, Germany, 23-24th May 2025.
Attended the "GRK 2240 Retreat 2024", Möhnesee, Germany, 12-13th September 2024.
Miscellaneous
Together with Clotilde Gauthier, I organized the GRK 2240 Workshop "The McKay Correspondence", WiSe25/26.
Together with Benjamin Klopsch, Adrian Baumann, Mikel Eguzki Garciarena & Julian Reichardt, I organized the GRK 2240 Retreat 2025, Oktober 2025.
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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