Bivariate $P$-polynomial association schemes
Combinatorics
2024-07-10 v3
Abstract
Bivariate P-polynomial association scheme of type are defined as a generalization of the P-polynomial association schemes. This generalization is shown to be equivalent to a set of conditions on the intersection parameters. A number of known higher rank association schemes are seen to belong to this broad class. Bivariate Q-polynomial association schemes are similarly defined.
Keywords
Cite
@article{arxiv.2212.10824,
title = {Bivariate $P$-polynomial association schemes},
author = {P. -A. Bernard and N. Crampe and L. Poulain d'Andecy and L. Vinet and M. Zaimi},
journal= {arXiv preprint arXiv:2212.10824},
year = {2024}
}