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Schedule, Notes/Handouts & Videos

Introductory Workshop: Geometric and Topological Combinatorics September 05, 2017 - September 08, 2017

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Sep 05, 2017
Tuesday
09:00 AM - 09:15 AM
  Welcome
09:15 AM - 10:15 AM
  Matroids and Tropical Geometry
Federico Ardila (San Francisco State University)
10:15 AM - 10:45 AM
  Break
10:45 AM - 11:45 AM
  Polynomial equations and polyhedra
Josephine Yu (Georgia Institute of Technology)
11:45 AM - 12:30 PM
  Introductions by junior participants
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Unimodualr triangulations of lattice polytopes
Francisco Santos Leal (University of Cantabria)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  Order, geometrically
Raman Sanyal (Johann Wolfgang Goethe-Universität Frankfurt)
Sep 06, 2017
Wednesday
09:00 AM - 10:00 AM
  Shape of Associativity
Satyan Devadoss (University of San Diego)
10:00 AM - 10:30 AM
  Break
10:30 AM - 11:30 AM
  f-vectors of polytopes and simplicial complexes, part I: results and problems
Eran Nevo (The Hebrew University of Jerusalem)
11:30 AM - 12:30 PM
  f-vectors of simplicial complexes and polytopes, part II: methods
Martina Juhnke-Kubitzke (Universität Osnabrück)
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Ehrhart positivity
Fu Liu (University of California, Davis)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  Ehrhart Unimodality and Simplices for Numeral Systems
Liam Solus (Royal Institute of Technology (KTH))
04:30 PM - 06:20 PM
  Reception
Sep 07, 2017
Thursday
09:00 AM - 10:00 AM
  Equivariant Methods in Discrete Geometry: Problems and Progress
Günter Ziegler (Freie Universität Berlin)
10:00 AM - 10:30 AM
  Tea
10:30 AM - 11:30 AM
  Linear versions of Tverberg's theorem: Progress and problems
Pablo Soberón (Northeastern University)
11:30 AM - 12:30 PM
  Hypertrees
Nathan Linial (Hebrew University)
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Random Simplicial Complexes
Matthew Kahle (Ohio State University)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  Cutting Cakes with Combinatorial Fixed Point Theorems
Kathryn Nyman (Willamette University)
Sep 08, 2017
Friday
09:00 AM - 10:00 AM
  Linear lifts and nonnegative factorizations
Samuel Fiorini (Université Libre de Bruxelles)
10:00 AM - 10:30 AM
  Tea
10:30 AM - 11:30 AM
  Positive semidefinite lifts and factorizations
João Gouveia (University of Coimbra)
11:30 AM - 12:30 PM
  Working Time
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Spectrahedra
Cynthia Vinzant (North Carolina State University)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  The Crossing Lemma Revisited
Janos Pach (École Polytechnique Fédérale de Lausanne (EPFL))