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The MPIM Weekly Program

Alternatively, look at the MPI calendar or the Bonn Mathematics Calendar, a complete list of all mathematical events in Bonn.

Mon, 20 Apr 2026

11:00 - 12:00
Quantum topology seminar
MPIM Lecture Hall
Léo Schelstraete (MPIM)
An gentle introduction to Khovanov–Rozansky homology
14:00 - 14:15
MPIM Topology Seminar
MPIM Lecture Hall
Ludovico Battista (MPIM)
Can you hear the shape of a Hyperbolic Marimba?
14:20 - 14:35
MPIM Topology Seminar
MPIM Lecture Hall
Branko Juran (Uni Bonn)
Norms in equivariant homotopy theory
14:40 - 14:55
MPIM Topology Seminar
MPIM Lecture Hall
Luca Pol (MPIM)
On the tt-geometry of global representations
16:30 - 17:30
PLeaSANT
MPIM Lecture Hall
Stevan Gajovic (MPIM)
Maximal degree extension needed to define an isogeny over a finite field

Tue, 21 Apr 2026

14:00 - 15:00
Extra talk
MPIM Lecture Hall
Margot Bruneaux (Universite Lyon 1)
Rational sections in families of homogeneous spaces over abelian varieties
15:05 - 17:05
Oberseminar Arithmetic Geometry and Representation Theory
MPIM Lecture Hall
Michael Temkin (The Hebrew University of Jerusalem/MPIM)
Wild Hurwitz spaces and level structures

Wed, 22 Apr 2026

12:45 - 13:45
Abstract Homotopy Theory Seminar
MPIM Seminar Room
Walker Stern (TU München)
tba
14:30 - 15:30
Number theory lunch seminar
MPIM Lecture Hall
Kam Cheong Au (University of Cologne)
$q$-analogues of Ramanujan's $1/\pi$-type formulas
16:30 - 18:00
Question Seminar
MPIM Seminar Room
Question Seminar

Thu, 23 Apr 2026

09:00 - 10:00
Seminar Algebraic Geometry (SAG)
MPIM Lecture Hall
Chenjing Bu (University of Oxford)
Intrinsic Donaldson–Thomas theory
10:30 - 11:30
Seminar Algebraic Geometry (SAG)
MPIM Lecture Hall
Timothy Logvinenko (Cardiff University/MPIM)
Perverse schobers and the McKay correspondence
13:30 - 15:00
Oberseminar Differentialgeometrie
MPIM Lecture Hall
Ido Grayevsky (University of Bristol)
On the sublinear classification and rigidity of lattices in semisimple Lie groups
14:00 - 16:00
Seminar Cobordism Hypotheses
MPIM Seminar Room
Kaiwen Song (Universität Bonn)
Dualisability
15:00 - 16:00
MPI-Oberseminar
MPIM Lecture Hall
Yixin Lan (MPIM)
A bridge from canonical bases to quiver varieties

Fri, 24 Apr 2026

10:00 - 12:00
Seminar "Multicurve invariants in Khovanov homology"
MPIM Seminar Room
Pjotr Vugts (Universität Bonn)
Bar-Natan category and tangle invariants
10:15 - 11:45
IMPRS seminar on various topics: Geometric Invariant Theory
MPIM Lecture Hall
Anna Savelyeva (Universität Bonn/MPIM)
Actions of Reductive Groups
14:00 - 16:00
Oberseminar Representation Theory
MPIM Lecture Hall
Zbigniew Wojciechowski (Technische Universität Dresden)
Infinite sequences via Lie algebra actions for oligomorphic groups
14:00 - 15:00
Number theory lunch seminar
MPIM Seminar Room
Sun Kai Leung (University of Oxford)
Arithmetic quantum chaos on the unit sphere

Mon, 27 Apr 2026

11:00 - 12:00
Quantum topology seminar
MPIM Lecture Hall
Jules Martel (Université Cergy-Pontoise)
Toward a homological (re)construction of TQFTs that also unifies them
14:00 - 15:00
MPIM Topology Seminar
MPIM Lecture Hall
Qingyuan Bai (MPIM)
More on invertible intervals

Tue, 28 Apr 2026

14:00 - 15:00
PLeaSANT
MPIM Lecture Hall
Steven Charlton (Universität zu Köln)
Multiple zeta star values, limits, and pi-power identities
15:00 - 16:00
Reading group on spectral geometry
MPIM Seminar Room
Ivan Yakovlev (MPIM)
Basic examples, heat kernel
15:05 - 17:05
Oberseminar Arithmetic Geometry and Representation Theory
MPIM Lecture Hall
Maximilian Hauck (MPIM)
Syntomification of rigid-analytic varieties over $\mathbb{Q}_p$

Wed, 29 Apr 2026

16:30 - 18:00
Question Seminar
MPIM Seminar Room
Question Seminar

Thu, 30 Apr 2026

10:30 - 11:30
Seminar Algebraic Geometry (SAG)
MPIM Lecture Hall
Alexei Skorobogatov (Imperial College London/MPIM)
Etale cohomology of (semi)abelian varieties
14:00 - 16:00
Seminar Cobordism Hypotheses
MPIM Seminar Room
Daniel Arone (Universität Bonn)
The one-dimensional case
15:00 - 16:00
MPI-Oberseminar
MPIM Lecture Hall
Noah Porcelli (MPIM)
Smooth structures and nearby Lagrangians

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