Students are very welcome to attend!
We mostly meet on Thursdays at 14:00 in LUH in B302, Welfengarten 1 . Check the schedule for exceptions, expecially during the first two weeks!!
Summer semester 2023
This semester we are repeating the successful format from last semester of our research seminar. It will be a common seminar between all members of our institute. The idea is to introduce an advanced topic, from the point of view of students, and try to motivate the postdocs and PhD students (or whoever wants) to find common research problems of interest.
The goal of the research seminar is to present several (non-compact) explicit examples of manifolds with Ricci-flat Kaehler metrics or hyperkaehler metrics. Apart from being ”general knowledge” examples, several of these spaces play two important roles in differential geometry. They can serve as building blocks of more complicated, compact spaces (e.g. the Kummer construction of K3 surfaces and Joyce’s construction of G2 manifolds). These explicit examples are also often of interest on their own, since they are both sufficiently simple to serve as tractable model spaces, but also non-trivial enough to be interesting.
Each talk has suggested sources, but the speaker is of course free to deviate from or completely ignore these.
FOR THE STUDENTS:
Are you interested in this seminar? If you want to give a talk e-mail Renan Assimos or Joergen Lye (better both), even if the topic you would like to speak about is already taken by a postdoc; the postdoc in charge of the talk will instead be happy to tutor you thoughout your preparation.
EVERY STUDENT is really encouraged to come, regardless of their background in Geometry or in Analysis.
**** Be aware of the intense first two weeks, we will cover some basics more than once a week so we can start talking about interesting stuff right on the second week of the semester.
**** Note that not every talk will assume knowledge of previous talks. So if you missed a couple of weeks, still give it a try. Talk to a postdoc!
Organizers: the postdocs
Summer semester 2023
For abstracts, please add your email to the seminars mailing list (e-mail Joergen Lye to be added).
| 10.05.2023 | 12:15-13:45 (G123) | Giuseppe Gentile (Leibniz Universität Hannover) | Gibbons-Hawking. |
| 03.05.2023 | 12:15-13:45 (G123) | Joergen Lye (Leibniz Universität Hannover) | Minimal submanifolds. |
| 27.04.2023 | 16:30-17:30 (B302) | Guadalupe Catillo-Solano (Universität Regensburg) | Title: The Moduli space of Ricci-flat metrics on a K3 surface. Abstract: It is known that if M is a compact spin manifold, then the moduli |
| 27.04.2023 | 15:00-16:00 (B302) | Alejandro Gil Garcia (Universität Hamburg) | Title: A class of locally inhomogeneous complete quaternionic Kähler manifolds. Abstract: We prove that the one-loop deformation of any quaternionic Kähler manifold |
| 26.04.2023 | 12:15-13:45 (G123) | Erfan (Leibniz Universität Hannover) | The Stenzel metric on Tangent Bundle of Spheres. |
| 20.04.2023 | 14:15-15:45 (B302) | Joergen Lye (Leibniz Universität Hannover) | Calabi’s two families of examples. |
| 19.04.2023 | 12:15-13:45 (G123) | Renan Assimos (Leibniz Universität Hannover) | Monge-Ampe`re on ALE spaces. |
| 14.04.2023 | 14:15-15:45 (B302) | Nikolaos Eptaminitakis (Leibniz Universität Hannover) | Finding Calabi-Yau metrics - the Monge-Ampe`re route. |
| 13.04.2023 | 14:15-15:45 (B302) | Yuguang Zhang (Leibniz Universität Hannover) | More Ka ̈hler geometry and special holonomy. |
| 11.04.2023 | 14:15-15:45 (B302) | Joergen Lye (Leibniz Universität Hannover) | Basics of (hyper-)Kähler geometry and special holonomy. . |
Winter semester 2022/23
| 19.01.2023 | 14:15-15:15 | Nikolaos Eptaminitakis (Leibniz Universität Hannover) | Long time behavior for solutions of the mean curvature flow. |
| 12.01.2023 | 14:15-15:15 | Renan Assimos (Leibniz Universität Hannover) | The Lagrangian Mean Curvature Flow |
| 15.12.2022 | 14:15-15:15 | Prof. Knut Smoczyk (Leibniz Universität Hannover) | The geometry of Lagrangian submanifolds in Kähler-Einstein manifolds |
| 08.12.2022 | 14:15-15:15 | Jorgen Olsen Lye (Leibniz Universität Hannover) | Calibrated geometries and Lagrangian submanifolds |
| 01.12.2022 | 14:15-15:15 | Jorgen Olsen Lye (Leibniz Universität Hannover) | Kähler manifolds and introduction to calibrations |
| 17.11.2022 | 14:15-15:15 | Philipp Grunwald (Leibniz Universität Hannover) | Evolution equations |
| 27.10.2022 | 14:15-15:15 | Giuseppe Gentile (Leibniz Universität Hannover) | Sections 1 and 2 (until Simons' eq.) |
| 20.10.2022 | 14:15-15:15 | Giuseppe Gentile (Leibniz Universität Hannover) | Notation, reviewing the basics: connections on bundles, pullback connections, etc...
|
Summer semester 2022
| 21.04.2022 | 14:15-15:15 | Jorgen Olsen Lye (Leibniz Universität Hannover) | t.b.a. |
| 02.06.2022 | 14:15-15:15 | Lothar Schiemanowski (Leibniz Universität Hannover) | Topology of special holonomy asymptotically conical manifolds |
| 23.06.2022 | 14:15-15:15 | Lynn Heller (Leibniz Universität Hannover) | Loop group methods for the non-abelian Hodge correspondence on a 4-punctured sphere |
Winter semester 2021/22
| 04.11.2021 | 14:15-15:15 | Sebastian Heller (Leibniz Universität Hannover) | Parabolic bundles and DPW potentials |
| 18.11.2021 | 14:15-15:15 | Roger Bielawski (Leibniz Universität Hannover) | Coulomb branch and W-Hilbert schemes |
| 02.12.2021 | 14:15-14:45 | Yuguang Zhang (Leibniz Universität Hannover) | Exercises of scalar curvatures on symplectic 4-manifolds |
| 13.01.2022 | 14:15-15:15 | Sebastian Heller (Leibniz Universität Hannover) | Spin structures and Projective structures on Riemann surfaces |
| 27.01.2022 | 14:15-15:15 | Giuseppe Gentile (Leibniz Universität Hannover) | On the prescribed mean curvature flow of graphs in certain Lorentzian manifolds with non-compact space-like slice |
Summer semester 2021
| 22.04.2021 | 14:15-15:15 | Sebastian Heller (Leibniz Universität Hannover) | Willmore spheres in the 3-sphere revisited |
| 29.04.2021 | 14:15-15:15 | No Talk | |
| 06.05.2021 | 14:15-15:15 | No Talk (Annual Staff Briefing) | |
| 13.05.2021 | 14:15-15:15 | Holiday | |
| 20.05.2021 | 14:15-15:15 | Max Schult | The Penrose construction |
| 27.05.2021 | 14:15-15:15 | Pentecost Break | |
| 03.06.2021 | 14:15-15:15 | Andreas Savas-Halilaj | Minimal maps, MCF and isotopy problems |
| 10.06.2021 | 14:15-15:15 | Lynn Heller (Leibniz Universität Hannover) | Holomorphic connections on the trivial bundle with Fuchsian monodromy |
| 17.06.2021 | 14:15-15:15 | Sebastian Heller (Leibniz Universität Hannover) | SYZ Geometry and the Y-vertex |
| 24.06.2021 | 14:15-15:15 | Daniel Fadel (Peking University) | Large mass monopoles on asymptotically conical 3-manifolds |
| 01.07.2021 | 14:15-15:15 | Renan Assimos (Leibniz Universität Hannover) | Building classical harmonic maps borrowing ideas from harmonic graphs |
| 08.07.2021 | 14:15-15:15 | no seminar | |
| 15.07.2021 | 14:15-15:15 | Lothar Schiemanowski | Introduction to the spinor flow |
| 22.07.2021 | 14:15-15:15 | Balázs Békési | tba |
Winter semester 2020/2021
| 15.10.2020 | 14:15-14:45 | Schiden Yohannes (Leibniz Universität Hannover) | The Sasaki-Ricci flow |
| 22.10.2020 | 14:15-15:15 | Knut Smoczyk (Leibniz Universität Hannover) | Self-expanders of the mean curvature flow |
| 29.10.2020 | 14:15-15:15 | Thomas Raujouan (Leibniz Universität Hannover) | Construction of complete embedded CMC surfaces in space forms |
| 5.11.2020 | 14:15-15:15 | Lothar Schiemanowski (Leibniz Universität Hannover) | Riemannian manifolds with L^p curvature bounds and their limit spaces |
| 12.11.2020 | 14:15-15:15 | Renan Assimos (Leibniz Universität Hannover) | On a spherical Bernstein theorem by B. Solomon |
| 19.11.2020 | 14:15-15:15 | Yuguang Zhang (Leibniz Universität Hannover) | Some observations of general type hypersurfaces in CP³ |
| 26.11.2020 | 14:15-15:15 | Sebastian Heller (Leibniz Universität Hannover) | Abelianisation of flat connections |
| 10.12.2020 | 14:15-15:15 | Norman Zergänge (Leibniz Universität Hannover) | Aspects of Riemannian manifolds with integral curvature bounds |
| 17.12.2020 | 14:15-15:15 | Andreas Savas-Halilaj (University of Ioannina) | Curve shortening flow on Riemann surfaces |
| 14.01.2021 | 14:15-15:15 | Naizhen Zhang (Leibniz Universität Hannover) | Degenerations of Grassmannians, quiver representations and Bruhat-Tits theory |
| 21.01.2021 | 14:15-15:15 | Roger Bielawski (Leibniz Universität Hannover) | Deformations of hyperkaehler cones |
| 28.01.2021 | 14:15-15:15 | Lynn Heller (Leibniz Universität Hannover) | Complete families of embedded high genus CMC surfaces in the 3-sphere |
Winter semester 2019/2020
| 07.11.2019 | 14:15-15:45 | Sebastian Heller (Leibniz Universität Hannover) | The energy of holomorphic sections of the Deligne-Hitchin moduli space |
| 21.11.2019 | 14:15-15:45 | Naizhen Zhang (Leibniz Universität Hannover) | The Strong Maximal Rank Conjecture and higher rank Brill–Noether theory |
Summer semester 2019
| 11.04.2019 | 14:15-15:45 | Roger Bielawski (Leibniz Universität Hannover) | The differential geometry of Hilbert schemes of curves in projective spaces |
| 16.05.2019 | 14:15-15:45 | Lynn Heller (Leibniz Universität Hannover) | Isotherme constrained Willmore Tori in der 3 Sphäre |
| 23.05.2019 | 14:15-15:45 | Monty-Max. Zuehlke (Leibniz Universität Hannover) | Short-time existence and uniqueness of a conformal Willmore flow on closed, non-isothermic surfaces |
| 18.07.2019 | 14:15-15:45 | Oliver Sonderegger (Leibniz Universität Hannover) | Hyperkähler metrics on regular nilpotent adjoint orbits |
