Vorträge in der Woche 28.04.2025 bis 04.05.2025
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Mittwoch, 30.04.2025: Towards an A^1-mirror symmetry
Chongyao Chen (Duke University)
This talk will be divided into two parts. In the first part, we review the story of local mirror symmetry and introduce the role of a combinatorial object known as the nilpotent cone. We explain how it arises in the study of period maps and Torelli-type problems, and how it offers insight into global mirror symmetry. In the second part, we turn to A^1-enumerative geometry. We introduce the notion of A^1-binomial coefficients, explain how they could arise in A^1-Gromov-Witten theory, and discuss their role in our ongoing project on A^1-mirror symmetry.
| Uhrzeit: | 17:00 - 18:00 |
| Ort: | via zoom (please ask Hannah Markwig for the link) |
| Gruppe: | Oberseminar kombinatorische algebraische Geometrie |
| Einladender: | Daniele Agostini, Hannah Markwig |
Freitag, 02.05.2025: High-Dimensional Bayesian Inference in Complex Systems
Jakob Knollmüller (ORIGINS Data Science Lab)
Reconstructing signals from noisy, incomplete data is a ubiquitous challenge across many scientific fields. In this talk, I present a Bayesian framework for high-dimensional inference involving millions of parameters. Our approach leverages Metric Gaussian Variational Inference to capture complex parameter correlations - moving beyond simple mean-field approximations - to achieve improved signal quality and reliable uncertainty quantification. By integrating Gaussian processes with adaptive kernels, the framework addresses multi-domain signal reconstruction challenges across diverse research areas. I will showcase several examples, including dynamic black hole imaging, and discuss how to use task-specific neural networks within this framework in order to solve novel problems through Bayesian reasoning.
| Uhrzeit: | 14:15 |
| Ort: | S6 (C05H05) |
| Gruppe: | Oberseminar Stochastik |
| Einladender: | Stephan Eckstein, Kilian Rückschloß |