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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

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

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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.

Workshop on "Dualisable Categories & Continuous K-theory"

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Organiser(s): 
Tobias Barthel, Kaif Hilman, Dominik Kirstein and Jonas McCandless
Date: 
Mon, 09/09/2024 - 09:00 - Fri, 13/09/2024 - 15:00
Location: 
MPIM Lecture Hall

Workshop on "Dualisable Categories & Continuous K-theory", September 9 - 13, 2024

Algebraic K-theory is an object that sits at the centre of large parts of algebra, geometry, and topology because of its universal role as a receptacle to count other mathematical objects with signs. However, since its invention, a phenomenon often called the Eilenberg swindle - which says that the algebraic K-theory of a category which is too large must necessarily be zero - has been accepted as a fundamental limit to the theory.

Conference on "Arithmetic Geometry" in Honour of Gerd Faltings' 70th Birthday

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Organiser(s): 
Christian Blohmann, Christian Liedtke, Wiesława Nizioł
Date: 
Mon, 22/07/2024 - 09:00 - Fri, 26/07/2024 - 15:00
Location: 
MPIM Lecture Hall

Conference on "Arithmetic Geometry" in Honour of Gerd Faltings' 70th Birthday

Speakers:

Bhargav Bhatt (University of Michigan, IAS/Princeton) (tbc)
Jean-Benoit Bost (Université Paris-Saclay)
Ana Caraiani (Imperial College London)
Christopher Deninger (Universität Münster)

Conference on "Homology growth in topology and group theory"

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Organiser(s): 
Grigori Avramidi, Dawid Kielak, Roman Sauer
Date: 
Mon, 13/05/2024 - 09:00 - Fri, 17/05/2024 - 17:00

Conference on "Homology growth in topology and group theory", May 13 - 17, 2024

Homology growth is an umbrella term for a number of invariants associated to a topological space. In their simplest incarnation, they measure the growth of Betti numbers in finite covers of the space. Over the years, homology growth became a central topic in group theory and geometric topology. It connects various topological and geometric phenomena, especially in low-dimensional manifolds, with analytically or combinatorially defined invariants, like L^2-Betti numbers. In particular, homology growth plays a central role in controlling the existence of fiberings, over the circle in the topological setting, and over the integers in the algebraic one. The motivation and guiding principles come from the theory of 3-manifolds.Inspired by Agol's resolution of Thurston's Virtual Fibering Conjecture, homology growth and related ideas have been very recently used both in the algebraic setting of cubulated groups, and in higher dimensional negatively curved manifolds. This conference aims to bring together people behind these recent developments, provide an overview of the field and help formulate a coherent system of conjectures to guide us in the years to come.

In case you have any questions, please contact hogro2024$@$mpim-bonn$.$mpg$.$de.

Registration

The registration is closed as of March 18, 2024.

Minimal Kinematics on $\mathcal{M}_{0,n}$

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Speaker: 
Bernd Sturmfels
Affiliation: 
MPI for Mathematics in the Sciences, Leipzig
Date: 
Fri, 26/04/2024 - 11:30 - 13:00
Location: 
MPIM Lecture Hall
Parent event: 
MPIM Math-Phys Seminar

Minimal kinematics identifies likelihood degenerations where the critical points are given by rational formulas. These rest on the Horn uniformization of Kapranov-Huh. We characterize all choices of minimal kinematics on the moduli space $\mathcal{M}_{0,n}$. These choices are motivated by the CHY model in physics and they are represented combinatorially by 2-trees. We compute 2-tree amplitudes, and we explore extensions to non-planar on-shell diagrams, here identified with the hypertrees of Castravet-Tevelev.

Goodbye

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Date: 
Fri, 05/04/2024 - 17:00 - 17:30
Location: 
MPIM Lecture Hall

Panel discussion: What to do with a PhD in mathematics?

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Speaker: 
Lynn D’eer, Antje Kiesel, Annette Werner, [TBC]
Date: 
Fri, 05/04/2024 - 15:30 - 17:00
Location: 
MPIM Lecture Hall

Tea & coffee

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Date: 
Fri, 05/04/2024 - 15:00 - 15:30
Location: 
MPIM Tea Room

Research talk

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Speaker: 
Gianne Derks
Date: 
Fri, 05/04/2024 - 14:10 - 15:00
Location: 
MPIM Lecture Hall
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