Combinatorics seminar 2017-2018

Unless otherwise noted, all talks are on Tuesday afternoon, 1–2 pm in Rome 771 (campus map).

Date	Speaker	Institution	Title
1/23	Jim Lawrence	George Mason	Interval posets, parity representations, binary partitions, and antiprisms
1/30	Lou Shapiro	Howard	Combinatorics and the Quadratic Formula
2/6	Craig Larson	VCU	The Graph Brain Project
2/13	Patrick Brosnan	U Maryland	Tymoczko's dot action on the cohomology of Hessenberg varieties
2/20	Joe Bonin	GWU	Minor-Closed Classes of Polymatroids
3/6	Dan Cranston	VCU	Coloring squares of planar graphs
3/13	No seminar!		Spring Break
3/20	Lowell Abrams	GWU	Searching for Trialities of Embedded Graphs
3/27	Kendra Pleasant	Morgan St.	Partitioning the Rainbow
4/3	Sebi Cioaba	U Delaware	Spectral characterization of graphs
4/10	Hosam Mahmoud	GWU Statistics	Local and global degree profiles of randomly grown self-similar hooking networks under uniform and preferential attachment
4/17	Felix Lazebnik	U Delaware	Cycles in sparse graphs
4/24	Deborah Chun	WVU Tech	Matroids from Graphs and Graphs from Matroids

Date	Speaker	Institution	Title
9/6	Joel Brewster Lewis	GWU	Reflection length in affine reflection groups
9/13	Max Wakefield	USNA	Matroid Kazhdan-Lusztig polynomials
9/20	Alex Burstein	Howard	Unbalanced Wilf-equivalence
9/27	Joe Bonin	GWU	A New Perspective on the $\mathcal{G}$ -Invariant of a Matroid
10/4	Dan Ullman	GWU	Differences of bijections
10/11	Geir Agnarsson	George Mason	The flags of Minkowski sums of simplices
10/18	Carolyn Chun	USNA	New directions in delta-matroids
10/25	Lowell Abrams	GWU	Symmetric spherical grids
11/1	James Shook	NIST	Degree sequence packing
Monday 11/6 4–5, SEH 7040 note unusual day and location!	Elizabeth Drellich	Swarthmore	The Containment Poset of Hessenberg Varieties
11/15	Joel Brewster Lewis	GWU	Rook theory of the finite general linear group
11/22	No seminar		Thanksgiving
11/29	Alexander Barg	U Maryland	Efficient low-degree polynomial interpolation

The seminar is co-organized by Joe Bonin and Joel Lewis.