GEODETICALLY CLOSED SUBGRAPHS IN A DISTANCE-REGULAR GRAPH
نویسندگان
چکیده
منابع مشابه
A distance-regular graph with bipartite geodetically closed subgraphs
Let Γ be a distance-regular graph of diameter d , and t be an integer with 2 ≤ t ≤ d − 1 such that at−1 = 0. For any pair (u, v) of vertices, let Π (u, v) be the subgraph induced by the vertices lying on shortest paths between u and v. We prove that if Π (u, v) is a bipartite geodetically closed subgraph for some pair (u, v) of vertices at distance t , then Π (x, y) is a bipartite geodetically ...
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ژورنال
عنوان ژورنال: Kyushu Journal of Mathematics
سال: 2000
ISSN: 1340-6116
DOI: 10.2206/kyushujm.54.155