Reconstructing a generalized quadrangle from the Penttila–Williford 4-class association scheme

Autor:	Giusy Monzillo, Alessandro Siciliano
Rok vydání:	2022
Předmět:	Combinatorics Class (set theory) Association scheme Generalized quadrangle Scheme (mathematics) Discrete Mathematics and Combinatorics Mathematics
Zdroj:	European Journal of Combinatorics. 99:103425
ISSN:	0195-6698
DOI:	10.1016/j.ejc.2021.103425
Popis:	Penttila and Williford constructed a 4 -class association scheme from a generalized quadrangle with a doubly subtended subquadrangle. We show that an association scheme with appropriate parameters and satisfying some assumption about maximal cliques must be the Penttila–Williford scheme.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de09389bb46dd2ca27d4af6d1092e7d4 https://doi.org/10.1016/j.ejc.2021.103425 Zobrazit plný text záznamu Full Text from ScienceDirect