## Workshop "Compactifications of stability manifolds"

This is a one-morning workshop about two newly-discovered approaches to the compactification

of the space of Bridgeland stability conditions.** **

## Workshop on "$\infty$-categories and their applications", August 17 - 20, 2020

### Update!

The workshop will take place remotely. More information and the program will follow.

## A Tropical Day at the MPIM

The Tropical Day is a day with four talks in tropical geometry. These talks are aiming at a broad audience with a general interest in tropical geometry. We hope for an active participation from Bonn and nearby cities.

## SageMath presentation afternoon (Wednesday July 24th)

SageMath (http://www.sagemath.org/) is an open source software for mathematical computations. It gathers hundreds of specialized libraries and softwares in a unified Python interface.

On the afternoon of July 24th, there will be a presentation of SageMath at MPI Bonn (1:00 - 4:00). After tea time (ie from 5pm) several SageMath experts will be there on the fourth floor in case you need help for installing SageMath on your computer or need advice on how to carry a specific computation.

This event is **part of a week long workshop** taking place at the Computer Science department of Bonn University.

More information on can be found at https://wiki.sagemath.org/days100

## Mini-Workshop on "Geometric Group Theory in Bonn", January 31 - February 1, 2019

**WARNING - HOTEL SCAM ALERT: Business Travel Management (BTM)**

Note to conference participants: Please read the WARNING regarding a fraudulent travel and hotel booking scheme. All hotel bookings should only be made directly through our housing department (housing@mpim-bonn.mpg.de).

## Workshop on 4-manifolds, September 16 - 20, 2019

**Workshop on 4-manifolds, September 16 - 20, 2019**

#### Organizers

Jeffrey Meier (Western Washington University)

Arunima Ray (MPIM Bonn)

#### Confirmed Speakers:

Robert Gompf (UT Austin)

Sergei Gukov (Caltech)

András Juhász (Oxford)

Du Pei (Caltech)

Lisa Piccirillo (Brandeis/MIT)

Juanita Pinzón-Caicedo (MPIM Bonn)

Mark Powell (Durham)

Rob Schneiderman (CUNY)

Hannah Schwartz (MPIM Bonn)

Laura Starkston (UC Davis)

András Stipsicz (Alfred Renyi)

Tadayuki Watanabe (Shimane University)

Alex Zupan (University of Nebraska Lincoln)

## Teleconference on categorified knot invariants

## Higher Geometric Structures along the Lower Rhine XI, March 8-9, 2018

This is the eleventh of a series of short workshops jointly organized by the Geometry/Topology groups in Bonn, Nijmegen, and Utrecht, all situated along the Lower Rhine. The focus lies on the development and application of new structures in geometry and topology such as Lie groupoids, differentiable stacks, Lie algebroids, generalized complex geometry, topological quantum field theories, higher categories, homotopy algebraic structures, higher operads, derived categories, and related topics.

## 3rd Japanese-German Number Theory Workshop, November 20 - 24, 2017

**3rd Japanese-German Number Theory Workshop**

**November 20 - 24, 2017**

Here you can find the official homepage

#### Organizers

- German Organizers : Jonas Kaszian (University of Cologne), Pieter Moree (MPIM)
- Japanese Organaizers : Hiroki Aoki (Tokyo University of Science), Koji Tasaka (MPIM/Aichi Prefectural University)

#### Speakers

Sho Takemori (MPIM)

Tomomi Ozawa (Univ. Paris 13)

Kenji Makiyama (Kyoto Sangyo Univ.)

Ren-he Su (Kyoto Univ.)

Nobuo Sato (Kyoto Univ.)

Hiraku Atobe (Tokyo Univ.)

Shingo Sugiyama (Kyushu Univ.)

Minoru Hirose (Kyushu Univ.)

Toshiki Matsusaka (Kyushu Univ.)

Shun'ichi Yokoyama (Kyushu Univ.)

Hiroshi Sakata (Waseda Univ Senior High School)

Hidetaka Kitayama (Wakayama Univ.)

Hiro-aki Narita (Kumamoto Univ.)

Takashi Nakamura (Tokyo Univ. of Science)

Hiroki Aoki (Tokyo Univ. of Science)

Claudia Alfes-Neumann (University of Cologne)

Jan Bruinier (TU Darmstadt)

Steffen Löbrich (University of Cologne)

Markus Schwagenscheidt (TU Darmstadt)

Annalena Wernz (RWTH Aachen)

## Workshop "Young Researchers in String Mathematics", November 27 - 30, 2017

**Workshop "Young Researchers in String Mathematics"**

**November 27 - 30, 2017**

## Summer School "Modular forms are everywhere"

## Young Women in Geometry

## Registration **Participants ****Practical Information**

This meeting is part of the series of workshops Young Women in...

The main lectures will be given by (**note that the list of our main speakers is updated)**

The workshop provides a platform for female graduate students and postdocs in Geometry to present their research. The main lectures will be complemented by participants' talks and a poster exhibition.

## Higher Geometric Structures along the Lower Rhine VIII

This is the eighth of a series of short workshops jointly organized by the Geometry/Topology groups in Bonn, Nijmegen, Utrecht and Leuven, all situated along the Lower Rhine. The focus lies on the development and application of new structures in geometry and topology such as Lie groupoids, differentiable stacks, Lie algebroids, generalized complex geometry, topological quantum field theories, higher categories, homotopy algebraic structures, higher operads, derived categories, and related topics.

## Workshop on Homotopy Type Theory

The workshop will give the participants the chance to discuss of current problems in areas of active research in homotopy type theory. Each day will start with a lecture series by Vladimir Voevodsky on "Dependent Type Theory", followed by open seminars in which workshop participants can give short presentations on their research.

The lecture series by Vladimir Voevodsky was recorded and can be found here .

## Seminar Aachen-Bonn-Köln-Lille-Siegen on Automorphic Forms

This is the 47th meeting of the joint French-German seminar on automorphic forms

which is organized by the universities of the five cited cities. Everybody who is interested in

automorphic forms is welcome. We encourage in particular young researchers to participate

and to report on their work in one of our meetings. For further information concerning this

meeting please send an email to moree$@$mpim$-$bonn$.$mpg$.$de

## BICMR-HCM: Beijing meets Bonn

The purpose of this workshop is to enhance scientific exchange with the German math community and also advertise the postdoc program at BICMR (Beijing International Center for Mathematical Research).

## Workshop on Homotopy theory, manifolds, and field theories

This workshop is part of our Trimester Program at the Hausdorff Institute (HIM)

## Workshop: Geometric quantization and topological recursion

**Goal:** The workshop aims at establishing bridges between the geometric quantization of moduli spaces, and the theory of the topological recursion, continuing earlier discussions initiated by some of the participants. As an application, we have in view the understanding of the all-order asymptotics of quantum knot invariants, like the knot state ensuing from the Witten-Reshetikhin-Turaev construction, or the colored Jones polynomial.

## Motivic structures on quantum cohomology and pencils of Calabi-Yau motives. Final reports

The goal is to report on the progress made since the first meeting in 2010 on a variety of subjects, including:

## Higher Geometric Structures along the Lower Rhine IV

This is the fourth of a series of short workshops jointly organized by the Geometry/Topology groups in Bonn, Nijmegen, and Utrecht, all situated along the Lower Rhine. The focus lies on the development and application of new structures in geometry and topology such as Lie groupoids, differentiable stacks, Lie algebroids, generalized complex geometry, topological quantum field theories, higher categories, homotopy algebraic structures, higher operads, derived categories, and related topics.

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