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Ursula Hamenstädt
Date of birth: 15 Jan 1961
Academic career
1986 PhD, Bonn
1986–1988 Miller fellow for basic research in science, Berkeley
1988–1990 Assistant professor, Caltech, Pasadena
1990–1991 Professor (C3), Bonn
1992– Full Professor (C4), Bonn
Offers
1991 Zurich University
1991 Göttingen University
2004 Bern University
2007 University of Pennsylvania
2010 Yale University
Invited Lectures
2010 Teichmueller theory, Barcelona
2010 ICM Hyderabad
2010 Topology, Oxford
2010 Dynamical systems, Warwick
2011 Geometry, Berkeley
2011 Trends in Dynamics, Chicago
2011 Geometric group theory, Ostende
Research profile
Teichmüller theory, dynamics of the Teichmüller flow and the Weil-Petersson flow, geometric
group theory, low-dimensional topology, invariants of group actions.
Editorships
Documenta Mathematica; Analysis and PDE; Conformal geometry and dynamics
Research Area A Investigation of Reeb orbits on the boundary of compact convex domains
using minimal discs.
Former Research Area E Dynamical properties of the Teichmüller flow and the Weil Petersson
flow.
Former Research Area F Construction of second bounded cohomology classes with coefficients
for groups acting on some hyperbolic space. Investigation of geometric and topological
properties of the mapping class group.
Research Area F*
Supervised theses
Master theses currently: 1
Diplom theses: 42
PhD theses: 12, currently 2
Selected PhD students
Juan Souto (Associate Prof, Univ. of British Columbia)

Selected publications
[Ham]
[Ham07]
[Ham08]
HAMENSTÄDT, Ursula: Rank-one isometries of proper {{CAT}(0)}-spaces
HAMENSTÄDT, Ursula: Geometry of the complex of curves and of Teichmüller space. In: Handbook of
Teichmüller theory. Vol. I Bd. 11. Eur. Math. Soc., Zürich, 2007, S. 447–467
HAMENSTÄDT, Ursula: Bounded cohomology and isometry groups of hyperbolic spaces. In: J. Eur. Math.
Soc. (JEMS) 10 (2008), Nr. 2, S. 315–349. – ISSN 1435–9855
[Ham09a] HAMENSTÄDT, Ursula: Bounded cohomology and cross ratios. In: Limits of graphs in group theory and
computer science. EPFL Press, Lausanne, 2009, S. 41–57
[Ham09b] HAMENSTÄDT, Ursula: Geometry of the mapping class groups. I. Boundary amenability. In: Invent. Math.
175 (2009), Nr. 3, S. 545–609. – ISSN 0020–9910
[Ham09c] HAMENSTÄDT, Ursula: Invariant Radon measures on measured lamination space. In: Invent. Math. 176
(2009), Nr. 2, S. 223–273. – ISSN 0020–9910
[Ham09d] HAMENSTÄDT, Ursula: Isometry groups of proper hyperbolic spaces. In: Geom. Funct. Anal. 19 (2009),
Nr. 1, S. 170–205. – ISSN 1016–443X
[Ham10a] HAMENSTÄDT, Ursula: Dynamical properties of the Weil-Petersson metric. In: In the tradition of Ahlfors-
Bers. V Bd. 510. Providence, RI : Amer. Math. Soc., 2010, S. 109–127
[Ham10b] HAMENSTÄDT, Ursula: Dynamics of the Teichmüller flow on compact invariant sets. In: J. Mod. Dyn. 4
(2010), Nr. 2, S. 393–418. – ISSN 1930–5311
[Ham10c] HAMENSTÄDT, Ursula: Stability of quasi-geodesics in Teichmüller space. In: Geom. Dedicata 146 (2010),
S. 101–116. – ISSN 0046–5755