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Conferences, seminars, talks and other events at the MPI for Mathematics

Upcoming conferences & activities

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Conference on "Interactions between higher algebra, manifolds and functor calculus"

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Organiser(s): 
Thomas Blom, Christian Kremer, Connor Malin, Peter Teichner
Date: 
Mon, 18/05/2026 - 08:30 - Fri, 22/05/2026 - 12:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Conference on "Interactions between higher algebra, manifolds and functor calculus"

Conference on "Interactions between higher algebra, manifolds and functor calculus", May 18-22, 2026

Functor calculus serves as a systematic method for approximating functors by their “polynomial” counterparts. These approximations often allow for interesting new computations in homotopy theory and geometry. For example, in the setting of manifolds, the work of Goodwillie–Klein–Weiss enables one to extend classical computations of spaces of embeddings beyond traditional stable ranges.

ChaBONNty conference

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Organiser(s): 
Stevan Gajovic, Martin Lüdtke, Oana Padurariu
Date: 
Mon, 29/06/2026 - 09:00 - Fri, 03/07/2026 - 12:30
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of ChaBONNty conference

ChaBONNty conference, June 29 - July 3, 2026

The endeavour of provably computing rational points on curves stretches back millennia. In the last years the method of Chabauty and Coleman has seen major breakthroughs. The method itself has remarkable applications and currently there are several exciting generalisations being actively developed and applied. In addition to invited talks by established names in the field and an open problem session, we will offer speed talks to young researchers to advertise their work.

Conference on "New Perspectives on Stable Homotopy and Beyond"

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Organiser(s): 
Tobias Barthel, James Cranch, Luca Pol, Sarah Whitehouse
Date: 
Mon, 07/09/2026 - 09:00 - Fri, 11/09/2026 - 12:30
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Conference on "New Perspectives on Stable Homotopy and Beyond"

Conference on "New Perspectives on Stable Homotopy and Beyond", September 7-11, 2026

The goal of this conference is to bring together researchers working in and around stable and chromatic homotopy theory, higher categories, and their geometric counterparts. It will serve both to highlight recent advances in these fields and to celebrate the fundamental contributions of Neil Strickland to their development.

Upcoming Talks

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Abstracts of upcoming talks at the MPIM. For an overview see also the calendar.

IMPRS seminar on various topics: Topological Hochschild homology and topological cyclic homology

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Organiser(s): 
Christian Kaiser
Date: 
Wed, 14/01/2026 - 10:15 - Fri, 29/05/2026 - 11:45
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of IMPRS seminar on various topics: Topological Hochschild homology and topological cyclic homology

The Unterseminar

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Organiser(s): 
Joseph Baine, Wyatt Reeves
Date: 
Mon, 19/01/2026 - 15:00 - Mon, 27/04/2026 - 17:00
Location: 
MPIM Seminar Room
Details: 
Program and Abstracts of The Unterseminar

Seminar webpage: https://wrreeves.github.io/Unterseminar/index.html

Quantum topology seminar

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Organiser(s): 
Léo Schelstraete, Naageswaran Manikanban, David Aretz, Filippos Sytilidis Aaron Hofer
Date: 
Mon, 13/04/2026 - 11:00 - Mon, 27/07/2026 - 12:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Quantum topology seminar

3D Chern-Simons and Shifted Geometric Quantization

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Speaker: 
David Carchedi
Affiliation: 
George Mason University/MPIM Bonn
Date: 
Mon, 13/04/2026 - 14:00 - 15:00
Location: 
MPIM Lecture Hall
Parent event: 
MPIM Topology Seminar

A Habiro formalism for CM points

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Speaker: 
Pengcheng Zhang
Affiliation: 
MPIM
Date: 
Mon, 13/04/2026 - 16:30 - 18:00
Location: 
MPIM Lecture Hall
Parent event: 
PLeaSANT
In this talk, we will present a Habiro-ring-like object encoding the information of CM points and singular moduli, which may contribute to a Habiro formalism for CM points.
 
We will start with the original Habiro ring defined by Habiro, explain how to view elements in the Habiro ring as power series expansions at roots of unity as well as functions on roots of unity, and sketch Habiro's proof of the injectivity of these associations via congruences of cyclotomic polynomials.
 
We will then recall the theory of s

The Heisenberg category of a category

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Speaker: 
Timothy Logvinenko
Affiliation: 
Cardiff University
Date: 
Tue, 14/04/2026 - 11:00 - 12:30
Location: 
MPIM Seminar Room
Parent event: 
Abstract Homotopy Theory Seminar

“In 90s Nakajima and Grojnowski identified the total cohomology of the Hilbert schemes of points on a smooth projective surface with the Fock space representation of the Heisenberg algebra associated to its cohomology lattice. Following a conjecture by Grojnowski, Segal and Wang extended this to any smooth projective variety by replacing Hilbert schemes with symmetric powers and cohomology with equivariant K-theory. Later, Krug lifted this to the level of derived categories.

Infinitesimal action on completed cohomology for GL_n over a CM field

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Speaker: 
Jelena Ivancic
Affiliation: 
MPIM/Universität Bonn
Date: 
Tue, 14/04/2026 - 15:05 - 17:05
Location: 
MPIM Lecture Hall
Parent event: 
Oberseminar Arithmetic Geometry and Representation Theory

I will talk about joint work with Vaughan McDonald which confirms a conjecture of Dospinescu-Pa\v{s}k\={u}nas-Schraen (localised suitably) for reductive group $GL_n/F$ for $F$ a CM field containing an imaginary quadratic field where a fixed prime $p$ splits.

Orbit statistics for algebraic group endomorphisms

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Speaker: 
Gunther Cornelissen
Affiliation: 
Universiteit Utrecht
Date: 
Wed, 15/04/2026 - 14:30 - 15:30
Location: 
MPIM Lecture Hall
Parent event: 
Number theory lunch seminar

We discuss asymptotic counting problems related to the orbit length and the decomposition of orbits into primitive ones, for the action of an endomorphism of an arbitrary algebraic group (such as an elliptic curves, torus, unipotent group,…) over the algebraic closure of a finite field. We present analogues of classical results from number theory related to Mertens’s second theorem and the Erdös-Kac theorem. By making some examples completely explicit, cute transcendental numbers akin the Kempner number make their appearance. (Joint work with Sun Woo Park.)
 

Question Seminar

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Date: 
Wed, 15/04/2026 - 16:30 - 18:00
Location: 
MPIM Seminar Room
Parent event: 
Question Seminar

Seminar homepage: https://sites.google.com/view/question-seminar/home

 

Twisting abelian fibrations on hyperkähler manifolds

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Speaker: 
Dominique Mattei
Affiliation: 
Hannover
Date: 
Thu, 16/04/2026 - 10:30 - 11:30
Location: 
MPIM Lecture Hall
Parent event: 
Seminar Algebraic Geometry (SAG)

I will present recent results about twists of abelian fibrations, which is a procedure to build new fibrations out of a fixed one. I will try to outline a general strategy to compute the group of twists in the case of hyperkähler manifolds, and give a modular interpretation of them. Based on a joint work with D. Huybrechts, and another one with Y. Dutta and E. Shinder. 

Mathematical events in Bonn

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Bonn Mathematics Calendar

All mathematical events in Bonn are listed in the Bonn Mathematics Calendar. For directions see the map.

University Calendar

All lectures and courses at Bonn University can be found in the university calendar.

 

Recurring seminars, series and courses

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Detailed list of recurring seminars, series of talks, and courses or lectures comprising multiple talks. For an overview see also the calendar.

Friedrich Hirzebruch Lecture

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Location: 
University Club Bonn
Details: 
Program and Abstracts of 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

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Organiser(s): 
C. Kaiser
Date: 
Thu, 31/01/2013 - 15:00 - Thu, 31/12/2026 - 16:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of 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.

Extra talk

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Details: 
Program and Abstracts of Extra talk

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

Arbeitsgemeinschaft Arithmetische Geometrie

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Organiser(s): 
Peter Scholze
Details: 
Program and Abstracts of Arbeitsgemeinschaft Arithmetische Geometrie

Promotionskolloquium

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Details: 
Program and Abstracts of Promotionskolloquium

IMPRS Minicourse

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Organiser(s): 
C. Kaiser
Details: 
Program and Abstracts of IMPRS Minicourse

Oberseminar Differentialgeometrie

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Organiser(s): 
Ursula Hamenstädt (U Bonn) and Cornelia Drutu (MPIM)
Date: 
Thu, 02/09/2010 - 11:58 - Sat, 18/12/2027 - 11:58
Details: 
Program and Abstracts of Oberseminar Differentialgeometrie

Contact: Cornelia Drutu (drutu$@$mpim-bonn$.$mpg$.$de)

Seminar Algebraic Geometry (SAG)

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Organiser(s): 
D. Huybrechts
Date: 
Thu, 06/01/2011 - 10:30 - Thu, 31/12/2026 - 12:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Seminar Algebraic Geometry (SAG)

Higher Differential Geometry Seminar

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Organiser(s): 
Christian Blohmann
Date: 
Wed, 18/04/2012 - 10:30 - Thu, 31/12/2026 - 12:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Higher Differential Geometry Seminar

Number theory lunch seminar

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Organiser(s): 
P. Moree
Date: 
Tue, 01/01/2013 (All day) - Fri, 30/06/2028 (All day)
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Number theory lunch seminar

The number theory lunch seminar takes place every Wednesday after a joint lunch of MPIM's number theorists...

Archived Events

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To narrow the list of events displayed please select year and event type or fill the search fields, then press Apply.

MPI-Oberseminar

Posted in
Organiser(s): 
C. Kaiser
Date: 
Thu, 31/01/2013 - 15:00 - Thu, 31/12/2026 - 16:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of 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.

Friedrich Hirzebruch Lecture

Posted in
Location: 
University Club Bonn
Details: 
Program and Abstracts of 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.

Conference on "New Perspectives on Stable Homotopy and Beyond"

Posted in
Organiser(s): 
Tobias Barthel, James Cranch, Luca Pol, Sarah Whitehouse
Date: 
Mon, 07/09/2026 - 09:00 - Fri, 11/09/2026 - 12:30
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Conference on "New Perspectives on Stable Homotopy and Beyond"

Conference on "New Perspectives on Stable Homotopy and Beyond", September 7-11, 2026

The goal of this conference is to bring together researchers working in and around stable and chromatic homotopy theory, higher categories, and their geometric counterparts. It will serve both to highlight recent advances in these fields and to celebrate the fundamental contributions of Neil Strickland to their development.

ChaBONNty conference

Posted in
Organiser(s): 
Stevan Gajovic, Martin Lüdtke, Oana Padurariu
Date: 
Mon, 29/06/2026 - 09:00 - Fri, 03/07/2026 - 12:30
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of ChaBONNty conference

ChaBONNty conference, June 29 - July 3, 2026

The endeavour of provably computing rational points on curves stretches back millennia. In the last years the method of Chabauty and Coleman has seen major breakthroughs. The method itself has remarkable applications and currently there are several exciting generalisations being actively developed and applied. In addition to invited talks by established names in the field and an open problem session, we will offer speed talks to young researchers to advertise their work.

Talk 19

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Speaker: 
tba
Date: 
Fri, 22/05/2026 - 11:00 - 12:00
Location: 
MPIM Lecture Hall
Parent event: 
Conference on "Interactions between higher algebra, manifolds and functor calculus"

tba

Tea Break

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Date: 
Fri, 22/05/2026 - 10:30 - 11:00
Location: 
MPIM Tea Room
Parent event: 
Conference on "Interactions between higher algebra, manifolds and functor calculus"

Talk 18

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Speaker: 
tba
Date: 
Fri, 22/05/2026 - 09:30 - 10:30
Location: 
MPIM Lecture Hall
Parent event: 
Conference on "Interactions between higher algebra, manifolds and functor calculus"

tba

Talk 17

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Speaker: 
tba
Date: 
Thu, 21/05/2026 - 16:30 - 17:30
Location: 
MPIM Lecture Hall
Parent event: 
Conference on "Interactions between higher algebra, manifolds and functor calculus"

tba

Tea Break

Posted in
Date: 
Thu, 21/05/2026 - 16:00 - 16:30
Location: 
MPIM Tea Room
Parent event: 
Conference on "Interactions between higher algebra, manifolds and functor calculus"

Talk 16

Posted in
Speaker: 
tba
Date: 
Thu, 21/05/2026 - 15:00 - 16:00
Location: 
MPIM Lecture Hall
Parent event: 
Conference on "Interactions between higher algebra, manifolds and functor calculus"

tba

short format
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