Workshop on curvature and global shape

  • July 26-August 1, 2015




Conference Schedule





All talks will be given in lecture room M2 of the lecture hall building (building #1 on the local map).

Monday, July 27:

Room M2
  8:00 - 9:15
Registration (Room SR 0, Einsteinstr 62)
  9:20 - 9:30 Opening
  9:30 - 10:30 Alexander Lytchak,
Isometric characterization of non-positive curvature
10:30 - 11:15 Coffee break
11:15 - 12:15
Anand Dessai (Fribourg) and Martin Herrmann (Karlsruhe),
Curvature, cohomogeneity less than or equal to one, and complex cohomology
12:15 - 14:15 Lunch break/Registration (Room 411, Einsteinstr 62)
14:15 - 15:15

Nadine Große (Leipzig),
The $L^p$ spectrum of the Dirac operator

15:15 - 16:30 Coffee break
16:30 - 17:30 Christian Bär (Potsdam),
An index theorem for compact Lorentzian manifolds with boundary


Tuesday, July 28:

Room M2
  9:30 - 10:30 Karsten Grove (Notre Dame),
Diameter rigidity in positive curvature: new and old
10:30 - 11:15 Coffee break
11:15 - 12:15
Henrik Matthiesen (Bonn),
Small eigenvalues of the Laplacian on surfaces
12:15 - 14:15 Lunch break
14:15 - 15:15

Nina Lebedeva (St. Petersburg),
Total curvature of geodesics on convex surfaces

15:15 - 16:30 Coffee break
16:30 - 17:30 Regina Rotman (Toronto),
Quantitative homotopy theory and the lengths of geodesics on Riemannian manifolds


Wednesday, July 29:

Room M2
  9:30 - 10:30 Andrea Mondino (ETH Zürich),
Some properties of non-smooth spaces with Ricci curvature lower bounds
10:30 - 11:00 Coffee break
11:00 - 11:40
Anna Siffert (University of Pennsylvania),
Isoparametric hypersurfaces in spheres
11:40 - 11:50 Short break
11:50 - 12:20
Luis Guijarro (Madrid),
Every point is critical in a Riemannian manifold
12:20 -  Lunch break
14:00 - 

Bicycle trip

We meet at the train station at 14:00 and leave at 14:15. For those who don't know how to get to the station, we'll provide the relevant information.


Thursday, July 30:

Room M2
  9:30 - 10:30
Fernando Galaz-Garcia (Karlsruhe),
Cohomogeneity-one topological manifolds
10:30 - 11:15 Coffee break
11:15 - 12:15
Lee Kennard (Oklahoma),
Torus actions and positive curvature in dimensions up to 24
12:15 - 14:15 Lunch break
14:15 - 15:15

Michael Wiemeler (Augsburg),
Invariant metrics of positive scalar curvature on $S^1$ manifolds

15:15 - 16:30 Coffee break
16:30 - 17:30 Alexander Nabutovsky (Toronto)
Balanced finite presentations of the trivial group and geometry of four-dimensional manifolds


Friday, July 31:

Room M2
  9:30 - 10:30
Krishnan Shankar (Oklahoma),
On semi-free actions whose orbit spaces are manifolds
10:30 - 11:00 Coffee break
11:00 - 11:45 Ramiro Lafuente (Münster),
Homogeneous Ricci flows
11:45 - 12:00 Short break
12:00 - 12:45 Renato Bettiol (University of Pennsylvania),
Strongly positive curvature: homogeneous classification and some obstructions
12:45 - 14:30 Lunch break
14:30 - 15:30 Marco Radeschi (Münster),
Metrics on spheres all of whose geodesics are closed
15:30 - 16:30 Coffee break
16:30 - 17:30 David Wraith (National University of Ireland, Maynooth),
Positive Ricci curvature on highly connected manifolds
19:00 Conference party



The coffee breaks will be on the ground floor of the math building.

The dinner party on Friday evening will take place in the centre of the city, at the Erbdrostenhof, Salzstraße 38.

For the party as well as the bicycle tour accompanying persons are welcome to attend.
People who want to participate in the tour and need a bicycle should let us know if they have not already done so.