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2023-05-26
Cospectral mates for generalized Johnson and Grassmann graphs
Aida AbiadJozefien D'haeseleerWillem H. HaemersRobin Simoens
文献摘要
We provide three infinite families of graphs in the Johnson and Grassmann schemes that are not uniquely determined by their spectrum. We do so by constructing graphs that are cospectral but non-isomorphic to these graphs.
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