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Association schemes and t-designs in regular semilattices

✍ Scribed by Philippe Delsarte


Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
758 KB
Volume
20
Category
Article
ISSN
0097-3165

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On spherical designs obtained from Q-pol
✍ Sho Suda πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 English βš– 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