Universität Bonn

Events Calendar

February 2024

Location: Endenicher Allee 60, Raum 1.008

Abstract:
In this talk we will describe last advances towards the classification of pre-Nichols algebras of diagonal type with finite Gelfand-Kirillov dimension, a key step towards the corresponding problem for pointed Hopf algebras. We will recall the existence of a central extension of (graded) Hopf algebras generalizing central extensions of de Concini-Kac-Procesi construction for quantum groups and different Lie Theory tools to get the general solution to the described problem

Location: MPIM Seminar Room

Location: MPIM Lecture Hall

Location: Institut für Numerische Simulation, Friedrich-Hirzebruch-Allee 7, Raum 2.035

Location: MPIM Lecture Hall

Location: MPIM Lecture Hall

Location: MPIM Lecture Hall

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

March 2024

Abstract: The rational Cherednik algebra H_c is an algebra of interest in modern representation theory, which is a degeneration of the double affine Hecke algebra, introduced by Cherednik to prove Macdonald's conjectures about properties of Macdonald polynomials. For values of c lying in chambers separated by walls, representations of H_c are labeled by partitions. Combinatorial wall-crossing is a bijection from the set of irreducible representations of H_c to the set of irreducible representations of H_c', where c and c' lie in adjacent chambers separated by a wall. Combinatorial wall-crossing across one wall was proven by Losev to be equal in large positive characteristic to an extension of the Mullineux involution from modular representation theory of the Symmetric Group. We will exhibit interesting patterns in combinatorial wall-crossing, both proven and observed in computer experiments, and use them to prove and refine parts of a conjecture of Bezrukavnikov.

Room 1.008

Location: Endenicher Allee 60, Lipschitz Lecture Hall

Abstract:
In this talk we analyse the γ-convergence of a family of nonlocal functionals defined on finite-differences to a local functional F(u) that depends on the symmetric gradient of u and on the jump set of u. This is a generalisation to the Griffith functional of a classical result for the Mumford-Shah of Gobbino. The key step is the compactness in GSBD of sequences with uniformly bounded energy without any additional L-bound. This is an ongoing work in collaboration with S. Almi, E. Davoli and E. Tasso.

Invited Speakers:

  • Michael Feldman (Tel-Aviv University)
  • László A. Végh (London School of Economics and Political Sciences)

Location: Lipschitz hall, Endenicher Allee 60, 53115 Bonn

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

April 2024

Location: Max Planck Institute for Mathematics, Bonn

Link to the Event Page
Link to the Registration Page

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

May 2024

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

June 2024

Invited Speakers:

  • Mirela Ben-Chen (Technion Israel Institute of Technology)
  • Sergio Conti (University of Bonn)
  • Patrick Dondl (Albert-Ludwigs-Universität Freiburg)
  • Martin Metscher (MTU Aero Engines AG)
  • Felix Otto (Max-Planck-Institut für Naturwissenschaften)
  • Tobias Preußer (Fraunhofer Institute for Digital Medicine MEVIS)
  • Carola-Bibiane Schönlieb (University of Cambridge)
  • Peter Schröder (California Institute of Technology)
  • Rüdiger Schultz (Universität Duisburg-Essen)
  • Gabriele Steidl (Technische Universität Berlin)
  • Robert Strzodka (Universität Heidelberg)
  • Max Wardetzky (Universität Göttingen)
  • Barbara Zwicknagl (Humboldt-Universität zu Berlin)

Location: Lipschitz hall, Endenicher Allee 60, 53115 Bonn

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

July 2024

Invited Speakers:

  • Jon Brundan (University of Oregon)
  • Shun-Jen Cheng (Academia Sinica)
  • Kevin Coulembier (University of Sydney)
  • Maria Gorelik (Weizmann Institute)
  • Victor Kac (MIT)
  • Jonathan Kujawa (University of Oklahoma)
  • Andrew Manion (NC State University)
  • Jonas Nehme (University of Bonn)
  • Shifra Reif (Bar-Ilan University)
  • Lev Rozansky (University of Chapel-Hill)
  • Siddharta Sahi (Rutgers University)
  • Hadi Salmasian (University of Ottawa)
  • Vera Serganova (University of California, Berkeley)
  • Alexander Sherman (University of Sydney)

Location: Lipschitz hall, Endenicher Allee 60, 53115 Bonn

Link

Location: Lennéstr. 2, Seminarraum

Link (incl. Abstract)

Invited Speakers:

  • Michael Christ (UC Berkeley)
  • Philip Gressman (U. Penn)
  • Ian Petrow (UCL)
  • James Wright (U. Edinburgh)
  • Ruixiang Zhang (UC Berkeley)
  • Polona Durcik (Chapman University)
  • Dóminique Kemp (UW Madison/IAS/Princeton)
  • Dominique Maldague (MIT)
  • Hong Wang (UCLA)

Location: Lipschitz hall, Endenicher Allee 60, 53115 Bonn

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

Invited Speakers:

  • Jonathan Bennett (University of Birmingham)
  • Xiumin Du (Northwestern University)
  • Malabika Pramanik (UBC)
  • Andreas Seeger (UW Madison)

Location: Lipschitz hall, Endenicher Allee 60, 53115 Bonn

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

August 2024

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

September 2024

Invited Speakers:

•    Alice Guionnet (Ecole Normale Supérieure Lyon)
•    Ioan Manolescu (University of Fribourg)
•    
Eliran Subag (Weizmann Institute of Science, Israel)
•    
Simone Warzel (Technical University of Munich)

Location: Lipschitz hall, Endenicher Allee 60, 53115 Bonn

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

October 2024

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

November 2024

Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

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Location: HIM lecture hall (Poppelsdorfer Allee 45, Bonn)

Link

December 2024

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