Abstract
A novel method, based on the topology of the cardinal vertex, is described to find an upper bound for the largest eigenvalue of a graph.
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Türker, L. An upper bound for the largest eigenvalue of a graph: Effect of types of vertices. J Math Chem 9, 341–349 (1992). https://doi.org/10.1007/BF01166097
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DOI: https://doi.org/10.1007/BF01166097