Generalizations of $k$-Weisfeiler-Leman stabilization
Combinatorics
2020-10-21 v3 Discrete Mathematics
Abstract
The family of Weisfeiler-Leman equivalences on graphs is a widely studied approximation of graph isomorphism with many different characterizations. We study these, and other approximations of isomorphism defined in terms of refinement operators and Schurian Polynomial Approximation Schemes (SPAS). The general framework of SPAS allows us to study a number of parameters of the refinement operators based on Weisfeiler-Leman refinement, logic with counting, lifts of Weisfeiler-Leman as defined by Evdokimov and Ponomarenko, and the invertible map test introduced by Dawar and Holm, and variations of these, and establish relationships between them.
Keywords
Cite
@article{arxiv.1906.00914,
title = {Generalizations of $k$-Weisfeiler-Leman stabilization},
author = {Anuj Dawar and Danny Vagnozzi},
journal= {arXiv preprint arXiv:1906.00914},
year = {2020}
}
Comments
To appear on the 'Moscow International Journal of Number Theory and Combinatorics'