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Bipartite distance-regular graphs: The Q-polynomial property and pseudo primitive idempotents

✍ Scribed by Lang, Michael S.


Book ID
124109006
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
408 KB
Volume
331
Category
Article
ISSN
0012-365X

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On the Multiplicities of the Primitive I
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and Terwilliger recently introduced the notion of a tridiagonal pair. We apply their results to distance-regular graphs and obtain the following theorem. THEOREM. Let denote a distance-regular graph with diameter D β‰₯ 3. Suppose is Q-polynomial with respect to the ordering E 0 , E 1 , . . . , E D of