SHILLA GRAPHS WITH \(b=5\) AND \(b=6\)

Autor: Alexander A. Makhnev, Ivan N. Belousov
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Ural Mathematical Journal, Vol 7, Iss 2 (2021)
Druh dokumentu: article
ISSN: 2414-3952
DOI: 10.15826/umj.2021.2.004
Popis: A \(Q\)-polynomial Shilla graph with \(b = 5\) has intersection arrays \(\{105t,4(21t+1),16(t+1); 1,4 (t+1),84t\}\), \(t\in\{3,4,19\}\). The paper proves that distance-regular graphs with these intersection arrays do not exist. Moreover, feasible intersection arrays of \(Q\)-polynomial Shilla graphs with \(b = 6\) are found.
Databáze: Directory of Open Access Journals