The uniqueness of covers for widely generalized line graphs

19 Feb 2020 Furuya Michitaka Kubota Sho Taniguchi Tetsuji Yoshino Kiyoto

As a natural generalization of line graphs, Hoffman line graphs were defined by Woo and Neumaier. Especially, Hoffman line graphs are closely related to the smallest eigenvalue of graphs, and the uniqueness of strict covers of a Hoffman line graph plays a key role in such a study... (read more)

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  • COMBINATORICS