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Parameters of association schemes that are both P- and Q-polynomial

โœ Scribed by Douglas A Leonard


Book ID
107884984
Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
376 KB
Volume
36
Category
Article
ISSN
0097-3165

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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