Fotios Iliopoulos (Theory Seminar)

"Efficiently list-edge coloring multigraphs asymptotically optimally"

Fotios Iliopoulos (IAS)
Monday, February 1st 2021, 2-3pm


We give polynomial-time algorithms for the seminal results of Kahn, who showed that the Goldberg-Seymour and List-Coloring conjectures for (list-)edge coloring multigraphs hold asymptotically. Kahn’s arguments are based on the probabilistic method and are non-constructive. Our key insight is to show that the main result of Achlioptas, Iliopoulos, and Kolmogorov for analyzing local search algorithms can be used to make constructive applications of a powerful version of the so-called Lopsided Lovasz Local Lemma. In particular, we use it to design algorithms that exploit the fact that correlations in the probability spaces on matchings used by Kahn decay with distance.   (In this talk, I will also give a brief overview of this framework, its recent extensions, and applications.)

Joint work with Alistair Sinclair.