Spectral characterizations of dumbbell graphs.
Wang, Jianfeng, Belardo, Francesco, Huang, Qiongxiang, Marzi, Enzo M.Li (2010)
The Electronic Journal of Combinatorics [electronic only]
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Displaying similar documents to “ON RELATION BETWEEN SPECTRA OF GRAPHS AND THEIR DIGRAPH DECOMPOSITIONS”
Spectral characterizations of dumbbell graphs.
Limit points of eigenvalues of (di)graphs
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Czechoslovak Mathematical Journal
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The study on limit points of eigenvalues of undirected graphs was initiated by A. J. Hoffman in 1972. Now we extend the study to digraphs. We prove: 1. Every real number is a limit point of eigenvalues of graphs. Every complex number is a limit point of eigenvalues of digraphs. 2. For a digraph , the set of limit points of eigenvalues of iterated subdivision digraphs of is the unit circle in the complex plane if and only if has a directed cycle. 3. Every limit point of eigenvalues...
Natural bijections between directed and undirected self-complementary graphs
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The Electronic Journal of Combinatorics [electronic only]
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