More on the Terwilliger algebra of Johnson schemes

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More on the Terwilliger algebra of Johnson schemes

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作者：Benjian Lv^a ; ^{benjian@mail.bnu.edu.cn" class="auth_mail} ; Carolina Maldonado^b ; ^{cmaldona@gmail.com" class="auth_mail} ; Kaishun Wang^a ; ^{wangks@bnu.edu.cn" class="auth_mail}
关键词：Association scheme ; Johnson scheme ; Terwilliger algebra
刊名：Discrete Mathematics
出版年：6 August 2014
年：2014
卷：328
期：Complete
页码：54-62
全文大小：423 K

文摘

In Levstein and Maldonado (2007), the Terwilliger algebra of the Johnson scheme J(n,d)

J (n, d)

was determined when n≥3d

n \geq 3 d

. In this paper, we determine the Terwilliger algebra T

T

for the remaining case 2d≤n<3d

2 d \leq n < 3 d

.

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