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P and Q polynomial schemes with q = −1

✍ Scribed by Paul Terwilliger

Book ID
103499463
Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
200 KB
Volume
42
Category
Article
ISSN
0095-8956

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📜 SIMILAR VOLUMES

P- and Q-Polynomial Association Schemes
P- and Q-Polynomial Association Schemes and Their Antipodal P-Polynomial Covers
✍ Paul Terwilliger 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 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