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The kernel of a sequence obtained from a given sequence with the aid of a regular transformation

✍ Scribed by A. A. Shcherbakov


Publisher
SP MAIK Nauka/Interperiodica
Year
1976
Tongue
English
Weight
375 KB
Volume
19
Category
Article
ISSN
0001-4346

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The pseudo-cosine sequences of a distanc
✍ Arlene A. Pascasio; Paul Terwilliger πŸ“‚ Article πŸ“… 2006 πŸ› Elsevier Science 🌐 English βš– 335 KB

Let denote a distance-regular graph with diameter D 3, valency k, and intersection numbers a i , b i , c i . By a pseudo-cosine sequence of we mean a sequence of real numbers σ 0 , σ 1 , . . . , σ D such that σ 0 = 1 and c i σ i-1 + a i σ i + b i σ i+1 = kσ 1 σ i for 0 i D -1. Let σ 0 , σ 1 , . . .