## Friedrich Hirzebruch Lecture

The annual Friedrich Hirzebruch Lecture is a series of lectures started in 2007 on the occasion of the 80th birthday of Prof. Friedrich Hirzebruch. The lectures address a general audience and aim at illustrating the relation between mathematics and art, society and other fields.

## MPI-Oberseminar

The Oberseminar is a very long running seminar at MPI (‘Ober‘ standing for 'upper'). Its idea is that the guests of the MPI speak in this seminar (hopefully early in their stay) and get the chance to explain their work to the other guests.

This often leads to further mathematical interaction, and in any case it is very interesting to know what one's colleagues are working on.

This implies two things:

- When you speak at the Oberseminar you should try to make sure that your talk is understandable and interesting to everyone, not just to the people in the same field. (We have many specialized seminars where you can present your work at a more technical level.)
- Please always attend the Oberseminar, even if the title of the talk seems technical, because you know that the speaker is going to do a good job. The only reason for absence is that the talk is in your field and thus will be too easy for you.

We hope to see you at the Oberseminar!

Christian Kaiser (organizer)

The directors:

Prof. Ballmann (em.)

Prof. Faltings

Prof. Gaitsgory

Prof. Harder (em.)

Prof. Hirzebruch †

Prof. Manin (em.)

Prof. Scholze

Prof. Teichner

Prof. Zagier (em.)

**Upcoming talks**

**Past talks**

For the abstracts click on the titles or see the list of abstracts.

### Don, 01 Jun 2023

### Don, 25 Mai 2023

### Don, 11 Mai 2023

### Don, 04 Mai 2023

### Don, 27 Apr 2023

### Don, 20 Apr 2023

### Don, 13 Apr 2023

### Don, 06 Apr 2023

### Don, 23 Mär 2023

### Don, 16 Mär 2023

### Don, 02 Mär 2023

### Don, 23 Feb 2023

### Don, 09 Feb 2023

### Don, 02 Feb 2023

### Don, 26 Jan 2023

### Don, 19 Jan 2023

### Don, 15 Dez 2022

### Don, 08 Dez 2022

### Don, 01 Dez 2022

### Don, 24 Nov 2022

### Don, 17 Nov 2022

### Don, 10 Nov 2022

### Don, 03 Nov 2022

### Don, 27 Okt 2022

### Don, 13 Okt 2022

### Don, 06 Okt 2022

### Don, 29 Sep 2022

### Don, 22 Sep 2022

### Don, 08 Sep 2022

### Don, 01 Sep 2022

### Don, 25 Aug 2022

### Don, 18 Aug 2022

### Don, 11 Aug 2022

### Don, 04 Aug 2022

### Don, 28 Jul 2022

### Don, 21 Jul 2022

### Don, 23 Jun 2022

### Don, 09 Jun 2022

### Don, 02 Jun 2022

### Don, 12 Mai 2022

### Don, 05 Mai 2022

### Don, 28 Apr 2022

### Don, 21 Apr 2022

### Don, 14 Apr 2022

### Don, 07 Apr 2022

### Don, 31 Mär 2022

### Don, 24 Mär 2022

### Don, 17 Mär 2022

### Don, 10 Mär 2022

### Don, 03 Mär 2022

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## IMPRS seminar on various topics: Cerf theory

## Student Seminar on Derived Geometry

## IMPRS seminar on various topics: Graded geometry

Contact: Christian Kaiser (kaiser @ mpim-bonn.mpg.de)

## Course on slice knots and knot concordance

## Low-dimensional topology seminar

Contact: Aru Ray

## Seminar on abstract homotopy theory

## Colloquium in Honor of the Retirement of Professor Gerd Faltings

Contact: Christian Kaiser (kaiser@mpim-bonn.mpg.de)

## IMPRS seminar on various topics: Riemann Zeta function

## IMPRS seminar on various topics: formal groups

## IMPRS seminar on various topics: complex surfaces

Contact: Christian Kaiser (kaiser@mpim-bonn.mpg.de)

## IMPRS seminar on various topics: thesis work

Contact: Christian Kaiser (kaiser@mpim-bonn.mpg.de)

## Oberseminar Geometrie

## Working Seminar in Differential Geometry

## IMPRS seminar on various topics: $\infty$-categories

For zoom details contact Christian Kaiser (kaiser@mpim...)

## Miniseries "An introduction to homotopy type theory and univalent foundations"

For zoom details contact: Barthel, Ozornova, Ray, Teichner.

The field of homotopy type theory/univalent foundations (HoTT/UF) presents a new connection between topology and logic. It provides a foundational framework for mathematics where equivalent objects are identified. Moreover, in HoTT the basic objects carry homotopical information making it possible to do homotopy theory in a synthetic way. Using appropriate software, the proofs in HoTT/UF can be verified on a computer.

## Miniseries "Local methods in categorical symplectic geometry"

Miniseries abstract: The Fukaya category is an invariant of a symplectic manifold governing the intersection theory of its Lagrangian submanifolds, built from the pseudoholomorphic disks which bound these Lagrangians. One particularly important version for non-compact symplectic manifolds is the partially wrapped Fukaya category, which plays a prominent role in homological mirror symmetry. This miniseries will lead up to a toolbox for computing and studying structural properties of partially wrapped Fukaya categories. One of the key tools is a descent formula, i.e. a cosheaf property with respect to Weinstein sectorial coverings. We will emphasize concrete examples, and homological mirror symmetry will be a recurring point of reference.

## Miniseries on symplectic topology

For zoom details please contact T. Barthel, V. Ozornova, A. Ray, P. Teichner.

## IMPRS seminar on various topics: Von Neumann algebras

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