Combinatorics seminar 2018-2019

Unless otherwise noted, all talks are on Thursday afternoon, 4–5 pm in Rome 352 (campus map) – note that this is a different room from the Fall.

Date	Speaker	Institution	Title
Monday 1/14 Rome 206 Note unusual day & location	Gi-Sang Cheon	Sungkyunkwan University	On Riordan graphs
1/24	Emanuele Delucchi	University of Fribourg	Stanley-Reisner rings of symmetric simplicial complexes
1/31	Valeriu Soltan	George Mason	Helly-type results on support lines for families of convex ovals
2/14	Jonathan Farley	Morgan State	Does Every Infinite Geometric Lattice of Finite Rank Have a Matching?
2/25 Rome 206 Note unusual day & location	Chaim Even Zohar	UC Davis	Patterns in Random Permutations
3/14	No seminar		Spring Break
3/28	Lowell Abrams	GWU	Quadrangulated Immersions of Cubic Graphs in the Sphere
4/4	Lindsey-Kay Lauderdale	Towson	On the Intersection Numbers of Finite Groups
4/15 Phillips 736 Note unusual day & location	Nathan McNew	Towson	Two problems regarding primitive sets of integers

Date	Speaker	Institution	Title
9/6	Joe Bonin	GWU	Presentations and Extensions of Transversal Matroids
9/13	Franklin Kenter	USNA	Zero Forcing: Minimum Rank Problems, Sample Error, Combinatorial Optimization, and More
9/20	Walter Morris	GMU	A proof of the strict monotone 5-step conjecture
9/27	Erik Slivken	University of Paris VII	The local limit of the fixed-point forest
10/4	Joel Lewis	GWU	Affine evacuation
10/11	Justin Allman	USNA	Counting partitions, Dynkin diagrams, quantum dilogarithms, and generalizations
10/18	Glenn Hurlbert	VCU	Injective Proofs of the Erdos-Ko-Rado and Hilton-Milner Theorems
10/25	Alex Burstein	Howard	Involutions and pseudo-involutions in the Riordan group
11/1	Lowell Abrams	GWU	Seaching for Trialities of Embedded Graphs
11/8	Cheyne Homberger	UMBC	Permuted Packings and Permutation Breadth
11/15	Jesus De Loera	UC Davis	Random Monomial Ideals

The seminar is co-organized by Joe Bonin and Joel Lewis. For titles and abstracts from past seminars, see the combinatorics seminar archive.