## Activities of SPP2026

On this site you find all conferences, workshops and seminars that have been or will be (financially and organisationally) supported by the DFG priority programme „Geometry at Infinity“.

#### 04/02/2019 | Workshop, Conference

### AUSTRALIAN-GERMAN WORKSHOP ON DIFFERENTIAL GEOMETRY IN THE LARGE

In the first week of the program, we plan an international conference to highlight recent advances in global Riemannian and metric geometry, topology, and geometric analysis to foster communication between experts and early career researchers from Australia and abroad and identify directions to set the stage for future advances.

In the second week, we plan to hold the first Australian-German workshop on differential geometry with Australian and German geometers who participated in the conference, focussing on new problems and potential directions of future research that came up in the first week.

Organisers: Owen Dearricott ( University of Melbourne), Diarmuid Crowley (University of Melbourne), Thomas Leistner (University of Adelaide), Yuri Nikolayevsky (LaTrobe University), Wilderich Tuschmann (Karlsruhe Institute of Technology).

**Start: **Monday, 04/02/2019 12:00 am**End: **Friday, 15/02/2019 05:05 pm
**Related project(s):****01**Hitchin components for orbifolds**02**Asymptotic geometry of sofic groups and manifolds**03**Geometric operators on a class of manifolds with bounded geometry**04**Secondary invariants for foliations**05**Index theory on Lorentzian manifolds**06**Spectral Analysis of Sub-Riemannian Structures**07**Asymptotic geometry of moduli spaces of curves**08**Parabolics and invariants**09**Diffeomorphisms and the topology of positive scalar curvature**10**Duality and the coarse assembly map**11**Topological and equivariant rigidity in the presence of lower curvature bounds**12**Anosov representations and Margulis spacetimes**13**Analysis on spaces with fibred cusps**14**Boundaries of acylindrically hyperbolic groups and applications**15**Spaces and Moduli Spaces of Riemannian Metrics with Curvature Bounds on compact and non-compact Manifolds**16**Minimizer of the Willmore energy with prescribed rectangular conformal class**17**Existence, regularity and uniqueness results of geometric variational problems**18**Analytic L2-invariants of non-positively curved spaces**19**Boundaries, Greens formulae and harmonic functions for graphs and Dirichlet spaces**20**Compactifications and Local-to-Global Structure for Bruhat-Tits Buildings**21**Stability and instability of Einstein manifolds with prescribed asymptotic geometry**22**Willmore functional and Lagrangian surfaces**23**Spectral geometry, index theory and geometric flows on singular spaces**24**Minimal surfaces in metric spaces**25**The Willmore energy of degenerating surfaces and singularities of geometric flows**26**Projective surfaces, Segre structures and the Hitchin component for PSL(n,R)**27**Invariants and boundaries of spaces**28**Rigidity, deformations and limits of maximal representations**29**Curvature flows without singularities**30**Nonlinear evolution equations on singular manifolds**31**Solutions to Ricci flow whose scalar curvature is bounded in Lp.**32**Asymptotic geometry of the Higgs bundle moduli space**33**Gerbes in renormalization and quantization of infinite-dimensional moduli spaces

#### 17/12/2018 | Conference

### Geometric Group Theory at Infinity

In this 3-day-long event we will bring together experts in GGT and related areas from Great Britain and Germany, as well as members of the SPP interested in the subject.

**Start: **Monday, 17/12/2018 10:00 am**End: **Wednesday, 19/12/2018 02:00 pm
**Related project(s):****08**Parabolics and invariants

#### 08/11/2018 | Conference

### Augsburg-Fribourg-Karlsruhe Riemannian Topology Meeting

The Riemannian Topology Meeting (RTM) is an irregularly recurring activity addressing mathematicians interested in the interplay of algebraic and geometric topology with riemannian geometry. Its tradition reaches back to 2012 during which it took place at the universites of Fribourg, Karlsruhe and Göttingen.

This RTM, taking place at the University of Fribourg, focuses on fostering the mathematical intercommunication between the research groups in Augsburg, Fribourg and Karlsruhe, which are participating in the SPP 2026 DFG project.

**Start: **Thursday, 08/11/2018 08:00 am**End: **Friday, 09/11/2018 08:00 pm
**Related project(s):****15**Spaces and Moduli Spaces of Riemannian Metrics with Curvature Bounds on compact and non-compact Manifolds

#### 08/10/2018 | Workshop

### Research meeting on the relative higher index class

Yosuke Kubota will give a mini-course on his recent preprint arXiv:1807.03181.

**Start: **Monday, 08/10/2018 02:00 pm**End: **Wednesday, 10/10/2018 01:00 pm
**Related project(s):****10**Duality and the coarse assembly map

#### 23/09/2018 | Seminar

### Constructions of aspherical manifolds and complexes

The goal of this Blockseminar is to understand the main constructions of aspherical manifolds and complexes.

**Start: **Sunday, 23/09/2018 06:00 pm**End: **Friday, 28/09/2018 01:00 pm
**Related project(s):****10**Duality and the coarse assembly map

#### 17/09/2018 | Conference

### Geometric Singular Analysis and Mathematical Physics

During the conference at University Oldenburg we shall gather international experts as well as young researchers in the field of geometric analysis and mathematical physics with a focus on the following three mutually related topics

1. Spectral geometry of singular (and non-compact) spaces

2. Geometric flows and curvature problems on singular spaces

3. Geometric analysis and mathematical physics

**Start: **Monday, 17/09/2018 01:30 pm**End: **Friday, 21/09/2018 01:31 pm
**Related project(s):****23**Spectral geometry, index theory and geometric flows on singular spaces

#### 06/09/2018 | Workshop

### Analysis and Group Theory

Invited Speakers

♦ Ando, H. (Chiba University, Japan)

♦ Bader, U. (Weizmann Institute, Israel)

♦ Matsuzawa, Y. (Shinshu University, Japan)

♦ Sauer, R. (Karlsruhe IT, Germany)

**Start: **Thursday, 06/09/2018 08:00 am**End: **Friday, 07/09/2018 06:00 pm
**Related project(s):****02**Asymptotic geometry of sofic groups and manifolds

#### 03/09/2018 | Workshop

### Ricci flow, mean curvature flow and related singular flows

This 4-day workshop is addressed to graduate students and researchers in geometric analysis and differential geometry. It will mainly focus on geometric flows on smooth and singular manifolds and related topics such as Ricci solitons.

More information is avaiable under

www.math.uni-hamburg.de/rf2018/

**Start: **Monday, 03/09/2018 01:30 pm**End: **Thursday, 06/09/2018 01:30 pm
**Related project(s):****21**Stability and instability of Einstein manifolds with prescribed asymptotic geometry**23**Spectral geometry, index theory and geometric flows on singular spaces**29**Curvature flows without singularities**31**Solutions to Ricci flow whose scalar curvature is bounded in Lp.

#### 23/07/2018 | Conference

### Geometric PDEs in Freiburg 2018

**Start: **Monday, 23/07/2018 09:00 am**End: **Friday, 27/07/2018 01:00 pm
**Related project(s):****16**Minimizer of the Willmore energy with prescribed rectangular conformal class**22**Willmore functional and Lagrangian surfaces**23**Spectral geometry, index theory and geometric flows on singular spaces**29**Curvature flows without singularities**31**Solutions to Ricci flow whose scalar curvature is bounded in Lp.

#### 25/06/2018 | Seminar

### Blockseminar "Selberg'sche Spurformel"

Die Mathematik der riemannschen Flächen, speziell die derjenigen vom Geschlecht mind. 2, ist außerordentlich reichhaltig. Solche Flächen besitzen hyperbolische Strukturen, d.h. Metriken mit konstanter Krümmung -1.

Wir werden tiefe Zusammenhänge zwischen analytischen Größen (Laplace-Eigenwerte), geometrischen Größen (Längen geschlossener Geodätischer) und arithmetischen Aspekten erkunden. Ein Höhepunkt wird dabei die Selberg'sche Spurformel sein, in der diese Aspekte zusammenfließen.

**Start: **Monday, 25/06/2018 06:00 pm**End: **Saturday, 30/06/2018 02:00 pm
**Related project(s):****05**Index theory on Lorentzian manifolds**15**Spaces and Moduli Spaces of Riemannian Metrics with Curvature Bounds on compact and non-compact Manifolds