๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Character Products and Q-Polynomial Group Association Schemes

โœ Scribed by Masao Kiyota; Hiroshi Suzuki


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
114 KB
Volume
226
Category
Article
ISSN
0021-8693

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


P- and Q-Polynomial Association Schemes
โœ Paul Terwilliger ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 92 KB

We find a condition on the intersection numbers of any \(P\) - and \(Q\)-polynomial association scheme \(Y\) with diameter at least 3, that holds if \(Y\) has an antipodal \(P\)-polynomial cover with diameter at least 7. If \(Y\) is a known example of a \(P\) - and \(Q\)-polynomial association schem

On spherical designs obtained from Q-pol
โœ Sho Suda ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 126 KB

We characterize that the image of the embedding of the Q-polynomial association scheme into the first eigenspace by primitive idempotent E 1 is a spherical t-design in terms of the Krein numbers. Furthermore, we show that the strengths of Pand Q-polynomial schemes as spherical designs are bounded by

Packing and Decomposition Problems for P
โœ V.I. Levenshtein ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 496 KB

We consider \(P\) - and \(Q\)-polynomial association schemes and introduce definitions of Delsarte codes and decomposable schemes. Many known combinatorial notions can be defined as Delsarte codes in suitable association schemes, and almost all classical association schemes turn out to be decomposab

Generalised Classes in Groups and Associ
โœ K.W. Johnson; E. Poimenidou ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 76 KB

A result of Strunkov on generalised conjugacy classes of groups is most conveniently expressed in terms of the P-matrix of an association scheme. This result is dual to a result of Blichfeldt on permutation characters, which has been shown by Cameron and Kiyota to hold for arbitrary characters and l