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Terwilliger algebra of Odd graphs

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arxiv 1112.0410 v1 pith:U3YUPPAG submitted 2011-12-02 math.CO

Terwilliger algebra of Odd graphs

classification math.CO
keywords algebraterwilligergraphjohnsonbasiscomputeddeterminediscrete
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abstract

In [The Terwilliger algebra of the Johnson schemes, Discrete Mathematics 307 (2007) 1621--1635], Levstein and Maldonado computed the Terwilliger algebra of the Johnson scheme $J(n,m)$ when $3m\leq n$. The distance-$m$ graph of $J(2m+1,m)$ is the Odd graph $O_{m+1}$. In this paper, we determine the Terwilliger algebra of $O_{m+1}$ and give its basis.

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