Fanny Kassel
CNRS
researcher
(Directrice de recherche)
Laboratoire Alexander Grothendieck
Institut des Hautes Études Scientifiques
35 route de Chartres
91440 Bures-sur-Yvette, France
Office: 1S12
Phone: +33 (0)1 60 92 66 34
Email:
kassel AT ihes.fr
Français
Research themes:
Discrete subgroups of Lie groups, geometry and dynamics
Geometry and Discrete Groups
Seminar at IHES
ERC Starting Grant
DiGGeS
Papers
Discrete subgroups of semisimple Lie groups, beyond lattices
,
to appear in the Proceedings of Groups St Andrews 2022 in Newcastle, LMS Lecture Notes series, Cambridge University Press.
pdf
Groupes de surface dans les réseaux des groupes de Lie semi-simples
[d'après J. Kahn, V. Marković, U. Hamenstädt, F. Labourie et S. Mozes]
,
Séminaire Bourbaki, exposé 1181, October 2021. Astérisque 438 (2022), p. 1-72.
pdf
Geometric structures and representations of discrete groups
,
Proceedings of the ICM 2018, vol. 2, p. 1113-1150, World Scientific, 2019.
pdf
Eigenvalue gaps for hyperbolic groups and semigroups
,
with
R. Potrie
, J. Mod. Dyn. 18 (2022), p. 161-208.
pdf
H
^{p,q}
-convex cocompactness and higher higher Teichmüller spaces
,
with
J. Beyrer
, arXiv:2305.15031.
pdf
Convex cocompactness for Coxeter groups
,
with
J. Danciger
,
F. Guéritaud
,
L. Marquis
, and
G.-S. Lee
, to appear in J. Eur. Math. Soc.
pdf
Convex cocompact actions in real projective geometry
,
with
J. Danciger
and
F. Guéritaud
, to appear in Ann. Sci. Éc. Norm. Supér.
pdf
Convex cocompactness in pseudo-Riemannian hyperbolic spaces
,
with
J. Danciger
and
F. Guéritaud
, Geom. Dedicata 192 (2018), p. 87-126,
special issue
Geometries: A Celebration of Bill Goldman's 60th Birthday
.
pdf
Tameness of Riemannian locally symmetric spaces arising from Anosov representations
,
with
O. Guichard
and
A. Wienhard
, arXiv:1508.04759.
pdf
Compactification of certain Clifford-Klein forms of reductive homogeneous spaces
,
with
F. Guéritaud
,
O. Guichard
, and
A. Wienhard
, Michigan Math. J. 66 (2017), p. 49-84.
pdf
Anosov representations and proper actions
,
with
F. Guéritaud
,
O. Guichard
, and
A. Wienhard
, Geom. Topol. 21 (2017), p. 485-584.
pdf
Proper affine actions for right-angled Coxeter groups
,
avec
J. Danciger
et
F. Guéritaud
, Duke Math. J. 169 (2020), p. 2231-2280.
pdf
Fundamental domains for free groups acting on anti-de Sitter 3-space
,
with
J. Danciger
and
F. Guéritaud
, Math. Res. Lett. 23 (2016), p. 735-770.
pdf
Margulis spacetimes via the arc complex
,
with
J. Danciger
and
F. Guéritaud
, Invent. Math. 204 (2016), p. 133-193.
pdf
Compact anti-de Sitter 3-manifolds and folded hyperbolic structures on surfaces
,
with
F. Guéritaud
and
M. Wolff
, Pacific J. Math. 275 (2015), p. 325-359.
pdf
Geometry and topology of complete Lorentz spacetimes of constant curvature
,
with
J. Danciger
and
F. Guéritaud
, Ann. Sci. Éc. Norm. Supér. 49 (2016), p. 1-56.
pdf
Maximally stretched laminations on geometrically finite hyperbolic manifolds
,
with
F. Guéritaud
, Geom. Topol. 21 (2017), p. 693-840.
pdf
Some open questions on anti-de Sitter geometry
,
arXiv:1205.6103
,
with T. Barbot, F. Bonsante, J. Danciger, W. M. Goldman, F. Guéritaud, K. Krasnov, J.-M. Schlenker, and A. Zeghib
Spectral analysis on standard locally homogeneous spaces,
with
T. Kobayashi
, arXiv:1912.12601.
pdf
Spectral analysis on pseudo-Riemannian locally symmetric spaces,
with
T. Kobayashi
, Proc. Japan Acad. Ser. A Math. Sci. 96 (2020), p. 69-74.
pdf
Invariant differential operators on spherical homogeneous spaces with overgroups
with
T. Kobayashi
, J. Lie Theory 29 (2019), p. 663-754.
pdf
Poincaré series for non-Riemannian locally symmetric spaces
with
T. Kobayashi
, Adv. Math. 287 (2016), p. 123-236.
pdf
Stable spectrum for pseudo-Riemannian locally symmetric spaces
,
with
T. Kobayashi
, C. R. Math. Acad. Sci. Paris 349 (2011), p. 29-33.
pdf
Deformation of proper actions on reductive homogeneous spaces
,
Math. Ann. 353 (2012), p. 599-632.
pdf
Quotients compacts des groupes ultramétriques de rang un
,
Ann. Inst. Fourier 60 (2010), p. 1741-1786.
pdf
Proper actions on corank-one reductive homogeneous spaces
,
J. Lie Theory 18 (2008), p. 961-978.
pdf
Habilitation thesis, defended on 18 November 2016:
Géométrie d'actions de groupes discrets
.
PhD thesis, under the supervision of
Yves Benoist
, defended on 25 November 2009:
Compact quotients of real or
p
-adic homogeneous spaces
.
pdf
Workshops
Workshop:
20 years of Anosov representations
, 9-11 October 2024 at the
MPI MiS
, Leipzig (Germany)
2nd meeting of the ANR project
GALS
, 10-12 January 2024 at the
IHES
(France)
Workshop
Homogeneous dynamics and geometry in higher rank Lie groups
, 19-23 June 2023 at the
IHES
(France)
Conference
Geometry, groups and dynamics
in honor of François Labourie,
24-28 May 2021
6-10 June 2022 in Cargèse (France)
(postponed)
CfW
Workshop of the program
Random and arithmetic structures in topology
at the
MSRI
,
3-4 September 2020
in Berkeley (California)
(cancelled)
Special session
Geometry and dynamics of constant curvature spaces
during the first France-Brazil conference, 15-19 July 2019 in Rio de Janeiro (Brazil)
Conference
Perspectives on convex projective geometry
, 24-28 June 2019 in Sète (France)
4th meeting
Geometry in action and actions in geometry
, 13 June 2019 in Nancy (France)
Conference
Dynamics of group actions
in honor of Yves Benoist, 26-31 May 2019 in Cetraro (Italy)
ANR
workshop:
Geometric structures
, 14-18 January 2019 in Nice (France)
Fields Medal Symposium
in honor of Maryam Mirzakhani at the
Fields Institute
, 5-9 November 2018 in Toronto (Canada)
Workshop
Representations of surface groups and beyond
, 24-26 September 2018 in Lille (France)
3rd meeting
Geometry in action and actions in geometry
, 25 June 2018 in Nancy (France)
Conference
Pseudo-Riemannian geometry and Anosov representations
, 11-14 June 2018 in Luxembourg
CfW
Workshop of the program
Dynamics on moduli spaces of geometric structures
at the
MSRI
, 15-16 January 2015 in Berkeley (California)
Workshop on
Geometric and Dynamical Aspects of Discrete Groups
, 4-6 September 2013 in Lille (France)
AIM
Workshop on
The Lipschitz metric on Teichmüller space
, 22-26 October 2012 in Palo Alto (California)
Summer school: Discrete subgroups of Lie groups: dynamics, actions, and rigidity, July 2025 at the
IHES
(France)
Arbeitsgemeinschaft:
Higher rank Teichmüller theory
, 9-15 October 2022 at the
MFO
, Oberwolfach (Germany)
GDR Platon
Workshop
for young researchers in geometry and dynamics, 15-17 November 2021 at the
CIRM
, Luminy (France)
Workshop
Anosov representations
for young researchers,
10-16 May 2020
29 August - 3 September 2021 in Aussois (France)
(postponed)
Summer school
Aspects of geometric group theory
, 8-19 July 2019 at the
IHES
(France)
Winter school
Geometric structures
, 7-11 January 2019 in Nice (France)
YGGT III
Meeting, 20-24 January 2014 at the
CIRM
, Luminy (France)
Junior Retreat
of the
GEAR Network
, 23 July - 10 August 2012 in Urbana-Champaign (Illinois)
Program
Random and arithmetic structures in topology
at the
MSRI
, August-December 2020 in Berkeley (California)
Scientific committees
Conference
Complex hyperbolic geometry and related aspects
in honor of Elisha Falbel,
9-13 November 2020
4-8 July 2022 at the
CIRM
, Luminy (France)
(postponed)
Conference
Geometric and analytic aspects of moduli spaces of Higgs bundles
,
8-12 June 2020
7-11 June 2021 in Strasbourg (France)
(postponed)
Workshop
Quasi-isometries and groups: rigidity and classification
, 9-14 September 2019 in Ventotene (Italy)
Workshop
Groups, geometry and dynamics
(ICM satellite), 23-27 July 2018 in Montevideo (Uruguay)
16th
Forum des jeunes mathématicien-ne-s
, 24-25 November 2016 in Strasbourg (France)
YGGT I
Meeting, 9-13 January 2012 in Będlewo (Poland)
Editorial boards
Publications Mathématiques de l'IHES
Journal of Lie Theory
Geometriae Dedicata
Annales Mathématiques Blaise Pascal
Astérisque
(2018-2023)
Gazette
of the
SMF
(2016-2020)