# Veranstaltungen

Konferenzen, Seminare, Vorträge und andere Veranstaltungen am MPIM

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## Workshop on "$\infty$-categories and their applications", August 17 - 21, 2020

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Organiser(s):
Hongyi Chu & Bruno Stonek
Datum:
Mon, 2020-08-17 09:00 - Fre, 2020-08-21 17:00
Location:
MPIM Lecture Hall

## Kommende Vorträge

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Ausführliche Liste aller demnächst stattfindenden Vorträge und Seminare. Für eine Übersicht konsultieren Sie bitte auch den Kalender.

## Recent developments in Quantum Topology -- Cancelled --

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We will review the basics of quantum topology such as the colored Jones polynomial of a knot, its standard conjectures relating to asymptotics, arithmeticity and modularity, as well as the recent quantum hyperbolic invariants of Kashaev et al, their state-integrals and their structural properties. The course is aimed to be accessible by graduate students and young researchers.

## Online: Category background for stacks

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Speaker:
Reinier Kramer
Zugehörigkeit:
MPIM
Datum:
Mon, 2020-07-06 10:30 - 12:00

I will recall often-used categorical constructions, such as the Yoneda lemma, categorical limits, and adjunctions. Most examples will be algebraic or topological in nature, with more geometric examples coming in the next session. I will also introduce group objects and discrete group objects in a category.

## Computability of the Minimal Genus on Second Homology

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Speaker:
Thorben Kastenholz
Zugehörigkeit:
Universität Bonn
Datum:
Mon, 2020-07-06 15:00 - 16:00
Parent event:
MPIM Topology Seminar

Surface representatives of second homology classes can be used to give geometric invariants for second homology classes, the most prominent examples are the genus and the Euler characteristic. In this talk I will introduce the minimal genus problem, explain why determining the minimal genus of a given homology class is in general undecidable, and how to compute it for a large class of "negatively-curved" spaces including 2-dimensional CAT(-1)-complexes.

## ONLINE: Perfect points on abelian varieties

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Speaker:
Emiliano Ambrosi
Zugehörigkeit:
MPIM
Datum:
Die, 2020-07-07 14:00 - 15:00

Let k be a field which is finitely generated over the algebraic closure of F_p, L be its perfection and let A be a k-abelian variety. The main goal of this talk is to provide some new result on the structure of the torsion free part of A(L). These results are motivated by their application to the "full" Mordell-Lang conjecture.The main tool is the study of various p-adic incarnation of certain 1-motives attached to L-rational points of A.

https://bbb.mpim-bonn.mpg.de/b/gae-a7y-hhd

## ONLINE: When multiplicativity meets automaticity...

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Speaker:
Oleksiy Klurman
Zugehörigkeit:
MPIM
Datum:
Mit, 2020-07-08 14:30 - 15:30
Parent event:
Number theory lunch seminar

Automatic sequences - that is, sequences computable by finite automata,provide a basic model for computation. The main objective of the present talk is to show how a blend of ideas from number theory, combinatorics and ergodic theory can be used to characterize automatic sets with some
multiplicative properties.

Zoom Online Meeting ID: 919 6497 4060
For password see the email or contact Peter Moree (moree@mpim...).

## Online: Recap of scheme theory

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Speaker:
Reinier Kramer
Zugehörigkeit:
MPIM
Datum:
Don, 2020-07-09 13:30 - 15:00

I will recall the definition of sheaves and schemes and many of their properties, such as e.g. properness, smoothness, &c. This is all material from Hartshorne, parts II and III, with less of a focus on sheaf cohomology (already treated in the previous reading group, on DT invariants), and making use of the category theory background.

## ONLINE Reading group: DT invariants, stability conditions and geometry

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Organiser(s):
Gaetan Borot, Severin Charbonnier, Alessandro Giacchetto, Reinier Kramer and Campbell Wheeler
Zugehörigkeit:
MPIM
Datum:
Fre, 2020-04-10 10:00 - 11:30
Datum:
Fre, 2020-04-17 10:00 - 11:30
Datum:
Fre, 2020-04-24 10:00 - 11:30
Datum:
Fre, 2020-05-01 10:00 - 11:30
Datum:
Fre, 2020-05-08 10:00 - 11:30
Datum:
Fre, 2020-05-15 10:00 - 11:30
Datum:
Fre, 2020-05-22 10:00 - 11:30
Datum:
Fre, 2020-05-29 10:00 - 11:30
Datum:
Fre, 2020-06-05 10:00 - 11:30
Datum:
Fre, 2020-06-12 10:00 - 11:30
Datum:
Fre, 2020-06-19 10:00 - 11:30
Datum:
Fre, 2020-06-26 10:00 - 11:30
Datum:
Fre, 2020-07-03 10:00 - 11:30
Datum:
Fre, 2020-07-10 10:00 - 11:30
Datum:
Fre, 2020-07-17 10:00 - 11:30

We will start an online reading group on DT invariants, stability conditions and geometry, to take place on
Fridays 10-11.30am. The first talk is background and will take place on Friday 10 (this week).

## ONLINE: Generalized blowup equations

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Speaker:
Kaiwen Sun
Zugehörigkeit:
MPIM
Datum:
Die, 2020-07-14 14:00 - 15:00

Blowup equations as the functional equations for the Nekrasov partition function of 4-dimensional gauge theory was proposed by Nakajima-Yoshioka in 2003. Certain K-theoretic versions were soon later found by Göttsche, Nakajima and Yoshioka. I will talk about two further generalizations found in recent three years, an elliptic version from the viewpoint of gauge theory and a most general version from the viewpoint of topological string theory on local Calabi-Yau threefolds.

## ONLINE: Zagier's polylogarithm conjecture and an explicit 4-ratio

Posted in
Speaker:
Steven Charlton
Zugehörigkeit:
Universität Hamburg
Datum:
Mit, 2020-07-15 14:30 - 15:30
Parent event:
Number theory lunch seminar

Zoom Online Meeting ID: 919 6497 4060
For password see the email or contact Peter Moree (moree@mpim...).

## ONLINE Reading group: DT invariants, stability conditions and geometry

Posted in
Organiser(s):
Gaetan Borot, Severin Charbonnier, Alessandro Giacchetto, Reinier Kramer and Campbell Wheeler
Zugehörigkeit:
MPIM
Datum:
Fre, 2020-04-10 10:00 - 11:30
Datum:
Fre, 2020-04-17 10:00 - 11:30
Datum:
Fre, 2020-04-24 10:00 - 11:30
Datum:
Fre, 2020-05-01 10:00 - 11:30
Datum:
Fre, 2020-05-08 10:00 - 11:30
Datum:
Fre, 2020-05-15 10:00 - 11:30
Datum:
Fre, 2020-05-22 10:00 - 11:30
Datum:
Fre, 2020-05-29 10:00 - 11:30
Datum:
Fre, 2020-06-05 10:00 - 11:30
Datum:
Fre, 2020-06-12 10:00 - 11:30
Datum:
Fre, 2020-06-19 10:00 - 11:30
Datum:
Fre, 2020-06-26 10:00 - 11:30
Datum:
Fre, 2020-07-03 10:00 - 11:30
Datum:
Fre, 2020-07-10 10:00 - 11:30
Datum:
Fre, 2020-07-17 10:00 - 11:30

We will start an online reading group on DT invariants, stability conditions and geometry, to take place on
Fridays 10-11.30am. The first talk is background and will take place on Friday 10 (this week).

## Mathematische Veranstaltungen in Bonn

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##### Bonner Mathematik-Kalendar

Alle mathematischen Veranstaltungen in Bonn sind im Veranstaltungskalender der Bonner Mathematik aufgeführt. Die Veranstaltungsorte finden Sie auf dieser Karte.

##### Vorlesungsverzeichnis

Alle Vorlesungen und Kurse der Universität Bonn finden Sie im Vorlesungsverzeichnis.

## Regelmäßige Seminare, Reihen und Kurse

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Ausführliche Liste regelmäßig stattfindender Seminare, Vortrags-Reihen und Kurse oder Vorlesungen, die aus mehreren Vorträgen bestehen. Für eine Übersicht konsultieren Sie bitte auch den Kalender.

## Friedrich Hirzebruch Lecture

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Location:
University Club Bonn

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

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Organiser(s):
C. Kaiser
Datum:
Don, 2013-01-31 15:00 - Don, 2026-12-31 16:00
Location:
MPIM Lecture Hall

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.

## Topics in Topology

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Location:
MPIM Lecture Hall

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Organiser(s):
C. Kaiser

## Representation theory learning seminar

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Organiser(s):
Hankyung Ko, Emily Norton, Thorsten Heidersdorf

## Extra talk

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This is a collection of extra talks that don't fit into the other series.

## A study group on Milnor invariants

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Organiser(s):
Danica Kosanovich
Zugehörigkeit:
MPIM
Location:
MPIM Seminar Room

## IMPRS seminar on various topics: Hitchin systems

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Organiser(s):
Christian Kaiser
Location:
MPIM Seminar Room

## Seminar on Algebra, Geometry and Physics

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Organiser(s):
Yuri Manin
Datum:
Fre, 2010-01-01 14:00 - Die, 2024-12-31 15:00
Location:
MPIM Lecture Hall

## Zurückliegende Veranstaltungen

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Füllen Sie die Suchfelder aus und drücken die Anwenden, um die Liste der angezeigten Veranstaltungen einzuschränken.

## MPI-Oberseminar

Posted in
Organiser(s):
C. Kaiser
Datum:
Don, 2013-01-31 15:00 - Don, 2026-12-31 16:00
Location:
MPIM Lecture Hall

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.

## Friedrich Hirzebruch Lecture

Posted in
Location:
University Club Bonn

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.

## Workshop on "$\infty$-categories and their applications", August 17 - 21, 2020

Posted in
Organiser(s):
Hongyi Chu & Bruno Stonek
Datum:
Mon, 2020-08-17 09:00 - Fre, 2020-08-21 17:00
Location:
MPIM Lecture Hall

## ONLINE: A glimpse on 3d modularity

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Speaker:
Francesca Ferrari
Zugehörigkeit:
SISSA
Datum:
Die, 2020-07-28 14:00 - 15:00

https://bbb.mpim-bonn.mpg.de/b/gae-a7y-hhd

## ONLINE: Special cycles on orthogonal Shimura varieties

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Speaker:
Eugenia Rosu
Zugehörigkeit:
MPIM
Datum:
Die, 2020-07-21 14:00 - 15:00

Extending on the work of Kudla-Millson and Yuan-Zhang-Zhang, together with Yott we are constructing special cycles for a specific orthogonal Shimura variety. We further construct a generating series that has as coefficients the cohomology classes corresponding to the special cycle classes on the orthogonal Shimura variety and show the modularity of the generating series in the cohomology group over the complex numbers.

## ONLINE Reading group: DT invariants, stability conditions and geometry

Posted in
Organiser(s):
Gaetan Borot, Severin Charbonnier, Alessandro Giacchetto, Reinier Kramer and Campbell Wheeler
Zugehörigkeit:
MPIM
Datum:
Fre, 2020-04-10 10:00 - 11:30
Datum:
Fre, 2020-04-17 10:00 - 11:30
Datum:
Fre, 2020-04-24 10:00 - 11:30
Datum:
Fre, 2020-05-01 10:00 - 11:30
Datum:
Fre, 2020-05-08 10:00 - 11:30
Datum:
Fre, 2020-05-15 10:00 - 11:30
Datum:
Fre, 2020-05-22 10:00 - 11:30
Datum:
Fre, 2020-05-29 10:00 - 11:30
Datum:
Fre, 2020-06-05 10:00 - 11:30
Datum:
Fre, 2020-06-12 10:00 - 11:30
Datum:
Fre, 2020-06-19 10:00 - 11:30
Datum:
Fre, 2020-06-26 10:00 - 11:30
Datum:
Fre, 2020-07-03 10:00 - 11:30
Datum:
Fre, 2020-07-10 10:00 - 11:30
Datum:
Fre, 2020-07-17 10:00 - 11:30

We will start an online reading group on DT invariants, stability conditions and geometry, to take place on
Fridays 10-11.30am. The first talk is background and will take place on Friday 10 (this week).

## ONLINE: Zagier's polylogarithm conjecture and an explicit 4-ratio

Posted in
Speaker:
Steven Charlton
Zugehörigkeit:
Universität Hamburg
Datum:
Mit, 2020-07-15 14:30 - 15:30
Parent event:
Number theory lunch seminar

Zoom Online Meeting ID: 919 6497 4060
For password see the email or contact Peter Moree (moree@mpim...).

## ONLINE: Generalized blowup equations

Posted in
Speaker:
Kaiwen Sun
Zugehörigkeit:
MPIM
Datum:
Die, 2020-07-14 14:00 - 15:00

Blowup equations as the functional equations for the Nekrasov partition function of 4-dimensional gauge theory was proposed by Nakajima-Yoshioka in 2003. Certain K-theoretic versions were soon later found by Göttsche, Nakajima and Yoshioka. I will talk about two further generalizations found in recent three years, an elliptic version from the viewpoint of gauge theory and a most general version from the viewpoint of topological string theory on local Calabi-Yau threefolds.

## ONLINE Reading group: DT invariants, stability conditions and geometry

Posted in
Organiser(s):
Gaetan Borot, Severin Charbonnier, Alessandro Giacchetto, Reinier Kramer and Campbell Wheeler
Zugehörigkeit:
MPIM
Datum:
Fre, 2020-04-10 10:00 - 11:30
Datum:
Fre, 2020-04-17 10:00 - 11:30
Datum:
Fre, 2020-04-24 10:00 - 11:30
Datum:
Fre, 2020-05-01 10:00 - 11:30
Datum:
Fre, 2020-05-08 10:00 - 11:30
Datum:
Fre, 2020-05-15 10:00 - 11:30
Datum:
Fre, 2020-05-22 10:00 - 11:30
Datum:
Fre, 2020-05-29 10:00 - 11:30
Datum:
Fre, 2020-06-05 10:00 - 11:30
Datum:
Fre, 2020-06-12 10:00 - 11:30
Datum:
Fre, 2020-06-19 10:00 - 11:30
Datum:
Fre, 2020-06-26 10:00 - 11:30
Datum:
Fre, 2020-07-03 10:00 - 11:30
Datum:
Fre, 2020-07-10 10:00 - 11:30
Datum:
Fre, 2020-07-17 10:00 - 11:30

We will start an online reading group on DT invariants, stability conditions and geometry, to take place on
Fridays 10-11.30am. The first talk is background and will take place on Friday 10 (this week).

## Online: Recap of scheme theory

Posted in
Speaker:
Reinier Kramer
Zugehörigkeit:
MPIM
Datum:
Don, 2020-07-09 13:30 - 15:00

I will recall the definition of sheaves and schemes and many of their properties, such as e.g. properness, smoothness, &c. This is all material from Hartshorne, parts II and III, with less of a focus on sheaf cohomology (already treated in the previous reading group, on DT invariants), and making use of the category theory background.

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