Atlanta Lecture Series (ALS) in Combinatorics and Graph Theory

Atlanta Lecture Series XXV (ALS 25) Online through Zoom, 8/28-8/29, 2021


The series of Mini-Conferences has been alternatively hosted by Emory University, Georgia Institute of Technology, and Georgia State University, three major research universities in Atlanta metropolitan. Each Mini-Conference features one or more principle speakers and several other outstanding combinatorics/graph theorists, as well as some promising young researchers.



Schedule (Click the titles to watch the recordings on YouTube)

Saturday moring, Aug 28th, 2021

Time Speaker Title & Abstract
9:00-9:25 Xujun Liu Packing Colorings of Subcubic Graphs
9:30-9:55 Alexander Clifton Almost \(k\)-covers of Hypercubes
10:00-10:25 He Guo Prague Dimension of Random Graphs
10:30-10:55 Blake Dunshee Directed Embeddings with Partially Predetermined Facial Walks
11:00-11:25 Guoning Yu Linear Arboricity of Degenerate Graphs
11:30-11:55 Michael Wigal Long Cycles in Essentially \(4\)-connected Projective-planar Graphs

Saturday aternoon, Aug 28th, 2021

Time Speaker Title & Abstract
13:00-13:50 Hal Kierstead Uniform Orderings for Generalized Coloring Numbers
14:00-14:50 Rob Morris Erdos Covering Systems
14:50-15:20 Break
15:20-16:10 Vladimir Nikiforov Real Eigenvalues of Complete Hypergraphs and Extrema of Symmetric Functions
16:15-16:40 Dong Ye Integer Flows and Sign-Circuit Covering
16:45-17:10 Vaidyanathan Sivaraman Polynomial \(\chi\)-boundedness

Sunday morning, Aug 29th, 2021

Time Speaker Title & Abstract
8:30-9:20 Lincoln Lu Anti-Ramsey Number of Edge-disjoint Rainbow Spanning Trees in all Graphs
9:30-10:20 Rob Morris Flat Littlewood Polynomials Exist
10:30-11:20 Songling Shan Some Recent Progress Towards the Overfull Conjecture
11:30-11:55 Zhiyu Wang Polynomial \(\chi\)-binding functions for \(t\)-broom-free graphs

Brochure (Schedule, titles and abstracts)


The Featured Speaker

  • Rob Morris, IMPA (Instituto Nacional de Matemàtica Pure e Applicada).

One-hour Speakers

  • Hal Kierstead, Arizona State University;

  • Lincoln Lu, University of South Carolina;

  • Vladimir Nikiforov, University of Memphis;

  • Songling Shan, Illinois State University.

Half-hour Speakers

  • Alexander Clifton, Emory University;

  • Blake Dunshee, Vanderbilt University;

  • He Guo, Georgia Institute of Technology;

  • Xujun Liu, University of Illinois Urbana-Champaign;

  • Vaidyanathan Sivaraman, Mississippi State University;

  • Zhiyu Wang, Georgia Institute of Technology;

  • Michael Wigal, Georgia Institute of Technology;

  • Dong Ye, Middle Tennessee State University;

  • Guoning Yu, Georgia State University.