Oberseminar Differentialgeometrie

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 [2] and Abstracts [3] of Oberseminar Differentialgeometrie

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

Upcoming talks

Past talks

For the abstracts click on the titles or see the list of abstracts [4].

Thu, 23 Apr 2026

13:30 - 15:00

MPIM Lecture Hall [5]

Ido Grayevsky

On the sublinear classification and rigidity of lattices in semisimple Lie groups [6]

Thu, 16 Apr 2026

16:30 - 17:30

MPIM Lecture Hall [5]

Juan Souto

Some examples of (big) mapping classes and their mapping tori [7]

13:30 - 14:30

MPIM Lecture Hall [5]

Gabriel Pallier

Dehn functions of solvable Lie groups [8]

Thu, 09 Apr 2026

13:30 - 15:00

MPIM Lecture Hall [5]

Kaitlin Ragosta

Marking graphs and finite-type Artin groups [9]

Thu, 26 Mar 2026

13:30 - 15:00

MPIM Lecture Hall [5]

Wolfgang Lück

$L^2$-invariants and fibering over $S^1$: aspherical counterexamples and new secondary obstructions [10]

Thu, 19 Mar 2026

13:30 - 15:00

MPIM Lecture Hall [5]

Grigori Avramidi

Free ideals and cellular waist inequalities in hyperbolic geometry [11]

Thu, 05 Mar 2026

13:30 - 15:00

MPIM Lecture Hall [5]

Jonathan Fruchter

Virtual homological torsion in low dimensions [12]

Thu, 05 Feb 2026

16:30 - 18:00

MPIM Lecture Hall [5]

Ignacio Vergara

Lipschitz free spaces and actions on $l^1$ [13]

Thu, 29 Jan 2026

16:30 - 18:00

MPIM Lecture Hall [5]

Martin Bridson

Common finite covers and quasitrees [14]

13:30 - 15:00

MPIM Lecture Hall [5]

Roman Sauer

On an uncountable family of simple Kazhdan groups in dimension 16 [15]

Thu, 22 Jan 2026

16:30 - 18:00

MPIM Lecture Hall [5]

Jacob Dittmer

The Berger conjecture for three dimensional manifolds [16]

Thu, 15 Jan 2026

16:30 - 18:00

MPIM Lecture Hall [5]

Marina Prokhorova

Spectral flow and family index for Dirac operators on surfaces with boundary [17]

Thu, 18 Dec 2025

16:30 - 18:00

MPIM Lecture Hall [5]

Uwe Semmelmann

Integrability of infinitesimal Einstein deformations on Kähler manifolds and symmetric spaces [18]

Thu, 11 Dec 2025

16:30 - 18:00

MPIM Lecture Hall [5]

Lawk Mineh

Realising quasi-isometry groups [19]

Thu, 04 Dec 2025

16:30 - 18:00

MPIM Lecture Hall [5]

Sugata Mondal

What is the hot spots conjecture in differential geometry? [20]

Thu, 13 Nov 2025

16:30 - 18:00

MPIM Lecture Hall [5]

Jean Raimbault

Topological complexities of hyperbolic manifolds [21]

Thu, 06 Nov 2025

16:30 - 18:00

MPIM Lecture Hall [5]

Lassi Rainio

Attainment of conformal dimension on symmetric Laakso-type fractal spaces [22]

Thu, 30 Oct 2025

16:30 - 18:00

Stefanie Zbinden

Using strong contraction to obtain hyperbolicity [23]

Thu, 23 Oct 2025

16:30 - 18:00

MPIM Seminar Room [24]

Ismael Morales

Tame complexes, L2-invariants and the Hanna Neumann conjecture [25]

Thu, 25 Jul 2024

16:30 - 18:00

MPIM Seminar Room [24]

Pablo Suarez-Serrato

Extremal entropy rigidities for Riemannian metric measure spaces [26]

Thu, 18 Jul 2024

16:30 - 18:00

MPIM Lecture Hall [5]

Shaked Bader

CAT(0) polygonal complexes are 2 median [27]

Thu, 04 Jul 2024

16:30 - 18:00

MPIM Lecture Hall [5]

Alexei Penskoi

Critical metrics for eigenvalues in Riemannian Geometry and minimal / harmonic maps [28]

Thu, 02 May 2024

16:30 - 18:00

MPIM Seminar Room [24]

Jean-Marc Schlenker

The bending lamination conjecture for hyperbolic 3-manifolds [OS Differentialgeometrie] [29]

Thu, 25 Apr 2024

16:30 - 18:00

MPIM Lecture Hall [5]

Sanghyun Kim

First order rigidity of manifold homeomorphism groups [30]

Thu, 18 Apr 2024

16:30 - 18:00

MPIM Lecture Hall [5]

Thomas Wannerer

Hard Lefschetz theorem and Hodge-Riemann relations for convex valuations [31]

Thu, 21 Mar 2024

16:30 - 18:00

MPIM Lecture Hall [5]

Anton Petrunin

Tubed embeddings [32]

Thu, 25 Jan 2024

16:30 - 18:00

MPIM Lecture Hall [5]

Teri Soultanis

Lipschitz-Volume rigidity of manifolds among integral current spaces [33]

Thu, 07 Dec 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Colin Davalo

Dirichlet domains for Anosov subgroups [34]

Thu, 30 Nov 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Daniele Semola

Ricci Curvature, Fundamental Groups, and the Milnor Conjecture [35]

Thu, 23 Nov 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Tommaso Goldhirsch

Characterizations of Higher Rank Hyperbolicity [36]

Thu, 16 Nov 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Oussama Bensaid

Coarse separation and the geometry of lamplighter groups [37]

Thu, 09 Nov 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Nathaniel Sagman

Minimal surfaces in symmetric spaces [38]

Thu, 26 Oct 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Eduardo Reyes

Approximating hyperbolic lattices by cubulations [39]

Thu, 19 Oct 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Joseph Hoisington

Infima of the Energy Functional in Homotopy Classes of Mappings of Complex Projective Space [40]

Thu, 25 May 2023

16:30 - 17:30

MPIM Lecture Hall [5]

Richard Wentworth

Compactifications of Hitchin's moduli space [41]

Thu, 11 May 2023

16:30 - 17:30

MPIM Lecture Hall [5]

Thang Nguyen

Local rigidity of boundary actions [42]

Thu, 04 May 2023

16:30 - 17:30

MPIM Lecture Hall [5]

Shi Wang

Eisenstein series and cusp counting in hyperbolic manifolds [43]

Thu, 20 Apr 2023

16:30 - 17:30

MPIM Lecture Hall [5]

Tommaso Cremaschi

Geometry of some infinite-type hyperbolic 3-manifolds [44]

Thu, 13 Apr 2023

16:30 - 17:30

MPIM Lecture Hall [5]

Jan Kotrbaty

An algebraic approach to inequalities in convex geometry [45]

Thu, 06 Apr 2023

16:30 - 17:30

MPIM Lecture Hall [5]

Chris Connell

The natural flow and homological vanishing in nonpositively curved manifolds [46]

Thu, 26 Jan 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Stefan Wenger

Integral currents in metric manifolds, with applications to Poincaré inequalities [47]

Thu, 19 Jan 2023

16:30 - 18:00

MPIM Lecture Hall [5]

Peter Topping

Ricci flow and PIC1 [48]

Thu, 08 Dec 2022

16:30 - 18:00

MPIM Lecture Hall [5]

Sergio Zamora

Restrictions on collapse with lower Ricci curvature bounds [49]

Thu, 01 Dec 2022

16:30 - 18:00

MPIM Lecture Hall [5]

Stephan Stadler

CAT(0) spaces of higher rank [50]

Thu, 17 Nov 2022

16:30 - 17:30

MPIM Lecture Hall [5]

Peter Smillie

Non-uniqueness of minimal surfaces in locally symmetric spaces [51]

Thu, 10 Nov 2022

16:30 - 18:00

MPIM Lecture Hall [5]

Giuliano Basso

Filling minimality and Lipschitz-volume rigidity of convex bodies among integral current spaces [52]

Thu, 27 Oct 2022

18:30 - 19:30

Online talk [53]

Pedro Ontaneda

tba [54]

Thu, 13 Oct 2022

16:30 - 17:30

MPIM Lecture Hall [5]

Cameron Rudd

When do short loops only bound big surfaces? [55]

Thu, 14 Jul 2022

16:30 - 17:30

Michael Albanese

[Obersem. Diff. Geometry/Venue: Math. Center, Endenicher Allee 60] "The Yamabe Invariant of Complex Surfaces" [56]

Thu, 07 Jul 2022

16:30 - 17:30

Frieder Jäckel

[Oberseminar Diff. Geometry/Venue: Lipschitz-Saal, Endenicher Allee 60] "Stability of hyperbolic metrics" [57]