Special Session: Algebraic, Geometric and Topological Combinatorics
Fall Central Section Meeting of the American Mathematical Society
September 12-13 (Saturday-Sunday), 2020

Formerly at University of Texas at El Paso; now meeting virtually

Schedule of Events

Each talk is scheduled for 20 minutes. All times are MDT (UTC-06:00). Speakers are invited to e-mail Jeremy Martin links or full PDFs of their talk slides.
Some talks were given in hourlong versions at the Graduate Online Combinatorics Colloquium

Saturday AM

• 9:00-9:20: New combinatorial models for the Genocchi and median Genocchi numbers, Michelle Wachs (1159-05-188)
• 9:30-9:50: Decompositions of Ehrhart \(h^*\)-Polynomials for Rational Polytopes, Andrés Vindas Melendez (1159-05-32)
• 10:00-10:20: Polytopal Realizations and Faces of Extended Nestohedra, Teresa Yu (1159-05-46)
• 10:30-10:50: Type polytopes and products of simplices, Bennet Goeckner (1159-05-141)
  [Graphic 1] [Graphic 2]
• 11:00-11:20: A Proof of Grünbaum's Lower Bound Conjecture for general polytopes, Lei Xue (1159-05-88)
  [Full GOCC version]

Saturday Midday

• Virtual lunch get-together on Gather (details TBA; email Caroline Klivans for the link)

Saturday PM

• 13:30-13:50: On the CW-complex of Monotone Polyhedral Paths, Jesús de Loera (1159-05-112)
• 14:00-14:20: The NGD-Circulant Graphs of the Form \(C_n(1,k)\), Jean Guillaume (1159-05-73)
• 14:30-14:50: Hopf monoids of ordered simplicial complexes, Federico Castillo (1159-05-150)
• 15:00-15:20: A Hopf Monoid on Set Families, Kevin Marshall (1159-05-59)
• 15:30-15:50: Oriented Matroids from Triangulations of Products of Simplices, Chi Ho Yuen (1159-05-44)
• 16:00-16:20: Characterizing quotients of positroids, Anastasia Chavez (1159-05-93)

Saturday Evening

• Virtual get-together on Gather (see above); game night on Board Game Arena

Sunday AM

• 9:00-9:20: Cycle and circuit chip-firing on graphs, Anton Dochtermann (1159-05-128)
• 9:30-9:50: The Tree Growing Sequence, Carrie Frizzell (1159-05-76)
  [Full GOCC version]
• 10:00-10:20: A Combinatorial Mapping for the Higher-Dimensional Matrix-Tree Theorem, Alex McDonough (1159-05-74)
  [Full GOCC version]
• 10:30-10:50: Sylvan structures on near-cones, Erika Ordog (1159-13-126)
• 11:00-11:20: Convex union representable complexes, Isabella Novik (1159-52-63)

Sunday PM

• 13:30-13:50: Domino tilings in dimension 3, Nicolau Saldanha (1159-05-48)
• 14:00-14:20: Pure Salvetti complexes and Euclidean Artin groups, Gordon Kirby (1159-20-157)
• 14:30-14:50: Lattice polytopes from Schur and symmetric Grothendieck polynomials, Julianne Vega (1159-05-104)
• 15:00-15:20: Whitney Numbers for Poset Cones, Galen Dorpalen-Barry (1159-05-125)
• 15:30-15:50: Outroductions
• 16:00-16:20: The reflection representation in the homology of subword order, Sheila Sundaram (1159-05-64)