Geometry Seminar / Graduate Lectures
The Geometry seminar encompasses invited talks, Graduate Lectures of the Department of Mathematics as well as talks by Ph. D. students and theses defences. Upcoming events will be announced through the seminar's mailing list.
Everyone interested is welcome to attend.
Unless specified otherwise our seminar will take place at 13:30 in WIL C/103 .
| 03.02.2026 (Tue) Room: TBD 13:30 |
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| 27.01.2026 (Tue) Room: TBD 13:30 |
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| 20.01.2026 (Tue) Room: TBD 13:30 |
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| 13.01.2026 (Tue) Room: TBD 13:30 |
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| 06.01.2026 (Tue) Room: TBD 13:30 |
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| 16.12.2025 (Tue) Room: TBD 13:30 |
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| 09.12.2025 (Tue) Room: TBD 13:30 |
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| 02.12.2025 (Tue) Room: TBD 13:30 |
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| 25.11.2025 (Tue) Room: TBD 13:30 |
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| 18.11.2025 (Tue) Room: TBD 13:30 |
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| 11.11.2025 (Tue) Room: WIL C 103 13:30 |
Florian Frick (Carnegie Mellon University, Pittsburgh) Title: Geometry of Rips complexes and applications Abstract: In geometric group theory, Rips complexes give higher structure to a Cayley graph, while in computational topology they provide a natural thickening of a point sample. I will explain a construction that is closely related to Rips complexes, which is amenable to the tools of metric geometry. By recording the interaction of pairwise proximal points, low-dimensional objects are endowed with higher structure. As a consequence, one can derive bounds for Gromov-Hausdorff distances between spaces, constraints for the distribution of roots of certain zero-mean real-valued functions, and generalizations of the Borsuk-Ulam theorem. I will focus on surveying some of these applications. |
For current lectures one can also refer to the Events calendar - Faculty of Mathematics.
The list of talks from past semesters can be found in the archive.