Special Session on Geometric and Topological Combinatorics and Their Applications

October 9–10, 2021

AMS Fall Central Sectional, formerly at Creighton University

Zoom links to talks available here.

Email Bennet (goeckner@uw.edu) for a Gather link!

Speakers

Organizers

Related Special Sessions

Social Links

Schedule of Events

Each talk is scheduled for 20 minutes. All times are CDT (UTC-05:00). Speakers are invited to email Bennet Goeckner (goeckner@uw.edu) links or full PDFs of their talk slides.

Saturday, October 9

9:00–9:20 Rational Ehrhart theory
Matthias Beck 		Abstract
9:30–9:50 Matching complexes of polygonal tilings
Julianne Vega 		Abstract
10:00–10:20 Geometric properties of weighted projective space simplices
Derek Hanely 		Abstract
Break
10:40–11:00 On lattice polytopes
Benjamin Braun 		Abstract
11:10–11:30 Unimodular triangulations of sufficiently large dilations
Gaku Liu 		Abstract
11:40–12:00 A proof of Grünbaum's lower bound conjecture for polytopes, lattices, and strongly regular normal pseudomanifolds
Lei Xue 		Abstract
Lunch: Everyone is welcome to join us on Gather! (Email goeckner@uw.edu for a link)
2:40–3:00 A family of convex sets in the plane satisfying the (4,3)-property can be pierced by 9 points
Daniel McGinnis 		Abstract
3:10–3:30 Line transversals in families of connected sets in the plane
Shira Zerbib 		Abstract
Break
3:50–4:10 Topological entropy on Hubbard trees
Chenxi Wu 		Abstract
4:20–4:40 A family of sandpile multijections
Alex McDonough 		Abstract
4:50–5:10 Enumerating simplicial spanning trees of shifted and color-shifted complexes, using simplicial effective resistance
Art Duval 		Abstract
Saturday evening: Social events on Gather and Board Game Arena!
Join us at 8:00 Central on Gather!
(Email goeckner@uw.edu for a link)

Sunday, October 10

9:00–9:20 Hopf monoids of ordered simplicial complexes
Jeremy Martin 		Abstract
9:30–9:50 A Hopf monoid on set families
Kevin Marshall 		Abstract
10:00–10:20 Subdivisions of shellable complexes
Max Hlavacek 		Abstract
Break
10:40–11:00 Edge partitions of the complete graph and a determinant like function
Mihai Staic 		Abstract
11:10–11:30 Stirling numbers for complex reflection groups
Bruce Sagan 		Abstract
Lunch: Everyone is welcome to join us on Gather! (Email goeckner@uw.edu for a link)
3:10–3:30 Homomorphism complexes, reconfiguration, and homotopy for directed graphs
Anton Dochtermann 		Abstract
3:40–4:00 Classifying all embedding dimension vectors of combinatorial codes
Amzi Jeffs 		Abstract
Break
4:20–4:40 The topology of projective codes and the distribution of zeros of odd maps
Florian Frick 		Abstract