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Workshop

Groups acting on CAT(0) spaces September 27, 2016 - September 30, 2016
To apply for Funding you must register by: June 27, 2016 about 3 years ago
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Location: MSRI: Simons Auditorium, Atrium
Organizers Ian Agol (University of California, Berkeley), Pierre-Emmanuel Caprace (Université Catholique de Louvain), Koji Fujiwara (Kyoto University), Alessandra Iozzi (ETH Zürich), LEAD Michah Sageev (Technion---Israel Institute of Technology)
Speaker(s)

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Description
The theme of the workshop is algebraic, geometric and analytical aspects of groups that act by isometries on spaces of non-positive curvature known as CAT(0) spaces. The world of CAT(0) spaces includes classical spaces such as symmetric spaces and buildings, as well as more avant-garde arrivals, such as CAT(0) cube complex. The workshop will bring together researchers studying various aspects of such groups and spaces to discuss recent developments and chart new directions in the field.    Group Photo
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To apply for funding, you must register by the funding application deadline displayed above.

Students, recent Ph.D.'s, women, and members of underrepresented minorities are particularly encouraged to apply. Funding awards are typically made 6 weeks before the workshop begins. Requests received after the funding deadline are considered only if additional funds become available.

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MSRI does not hire an outside company to make hotel reservations for our workshop participants, or share the names and email addresses of our participants with an outside party. If you are contacted by a business that claims to represent MSRI and offers to book a hotel room for you, it is likely a scam. Please do not accept their services.

MSRI has preferred rates at the Hotel Shattuck Plaza, depending on room availability. Guests can call the hotel's main line at 510-845-7300 and ask for the MSRI- Mathematical Science Research Institute discount. To book online visit this page (the MSRI rate will automatically be applied).

MSRI has preferred rates at the Graduate Berkeley, depending on room availability. Reservations may be made by calling 510-845-8981. When making reservations, guests must request the MSRI preferred rate. Enter in the Promo Code MSRI123 (this code is not case sensitive).

MSRI has preferred rates at the Berkeley Lab Guest House, depending on room availability. Reservations may be made by calling 510-495-8000 or directly on their website. Select "Affiliated with the Space Sciences Lab, Lawrence Hall of Science or MSRI." When prompted for your UC Contact/Host, please list Chris Marshall (coord@msri.org).

MSRI has a preferred rates at Easton Hall and Gibbs Hall, depending on room availability. Guests can call the Reservations line at 510-204-0732 and ask for the MSRI- Mathematical Science Research Inst. rate. To book online visit this page, select "Request a Reservation" choose the dates you would like to stay and enter the code MSRI (this code is not case sensitive).

Additional lodging options may be found on our short term housing page.

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Schedule, Notes/Handouts & Videos
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Sep 27, 2016
Tuesday
09:15 AM - 09:30 AM
  Welcome
09:30 AM - 10:20 AM
  On dense subgroups of Lie groups
Yves Benoist (Université de Paris XI)
10:20 AM - 11:00 AM
  Coffee Break
11:00 AM - 11:50 AM
  Homotopy and homology complexity in negative curvature
Roman Sauer (Karlsruhe Institute of Technology)
12:00 PM - 02:00 PM
  Lunch
02:00 PM - 02:50 PM
  Geometric methods for affine Deligne Lusztig varieties
Petra Schwer (Karlsruhe Institute of Technology)
02:50 PM - 03:30 PM
  Tea
03:30 PM - 04:20 PM
  Hyperbolicity in CAT(0)-spaces
Ursula Hamenstädt (Rheinische Friedrich-Wilhelms-Universität Bonn)
04:30 PM - 06:20 PM
  Reception
Sep 28, 2016
Wednesday
09:00 AM - 09:50 AM
  Tame automorphism group
Piotr Przytycki (McGill University)
09:50 AM - 10:30 AM
  Coffee Break
10:30 AM - 11:20 AM
  Hierarchically hyperbolic structures on cube complexes and applications
Alessandro Sisto (ETH Zürich)
11:40 AM - 12:30 PM
  Cubical geometry via hyperbolicity
Mark Hagen (University of Cambridge)
Sep 29, 2016
Thursday
09:00 AM - 09:50 AM
  Quasi-mobius maps between Morse boundaries of CAT(0) spaces
Ruth Charney (Brandeis University)
09:50 AM - 10:30 AM
  Coffee Break
10:30 AM - 11:20 AM
  Cubical accessibility and bounds on curves on surfaces
Nir Lazarovich (ETH Zürich)
11:40 AM - 12:30 PM
  Harmonic quasiisometries
Dominique Hulin (Université de Paris XI)
12:30 PM - 02:30 PM
  Lunch
02:30 PM - 03:20 PM
  Cocompactly cubulated Artin groups
Kasia Jankiewicz (McGill University)
03:20 PM - 04:00 PM
  Tea
04:00 PM - 04:50 PM
  Artin groups and nonpositive curvature
Thomas Haettel (Université de Montpellier)
Sep 30, 2016
Friday
09:30 AM - 10:20 AM
  On the linearity of lattices in affine buildings
Uri Bader (Weizmann Institute of Science)
10:20 AM - 11:00 AM
  Coffee Break
11:00 AM - 11:50 AM
  Regular Isometries of CAT(0) Cube Complexes are Plentiful
Talia Fernós (University of North Carolina)
11:50 AM - 02:00 PM
  Lunch
02:00 PM - 02:50 PM
  Which random groups are cubulated
John Mackay (University of Bristol)
02:50 PM - 03:30 PM
  Tea
03:30 PM - 04:20 PM
  Quasi-isometry and commensurability classification of certain right-angled Coxeter groups
Anne Thomas (University of Sydney)