Twice Q-polynomial distance-regular graphs of diameter 4
نویسندگان
چکیده
منابع مشابه
On bipartite Q-polynomial distance-regular graphs
Let Γ denote a bipartite Q-polynomial distance-regular graph with vertex set X, diameter d ≥ 3 and valency k ≥ 3. Let RX denote the vector space over R consisting of column vectors with entries in R and rows indexed by X. For z ∈ X, let ẑ denote the vector in RX with a 1 in the z-coordinate, and 0 in all other coordinates. Fix x, y ∈ X such that ∂(x, y) = 2, where ∂ denotes path-length distance...
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ژورنال
عنوان ژورنال: Science China Mathematics
سال: 2014
ISSN: 1674-7283,1869-1862
DOI: 10.1007/s11425-014-4958-0