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Leaves in Representation Diagrams of Bipartite Distance-Regular Graphs

โœ Scribed by Michael S. Lang


Book ID
111587708
Publisher
Springer
Year
2003
Tongue
English
Weight
81 KB
Volume
18
Category
Article
ISSN
0925-9899

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Tails of Bipartite Distance-regular Grap
โœ Michael S. Lang ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 205 KB

Let denote a bipartite distance-regular graph with diameter D โ‰ฅ 4 and valency k โ‰ฅ 3. Let ฮธ 0 > ฮธ 1 > โ€ข โ€ข โ€ข > ฮธ D denote the eigenvalues of and let E 0 , E 1 , . . . , E D denote the associated primitive idempotents. Fix s (1 โ‰ค s โ‰ค D -1) and abbreviate E := E s . We say E is a tail whenever the entry