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IEEE Transactions on Pattern Analysis and Machine Intelligence
Let G be a graph, A(G) its adjacency matrix. We prove that, if the least eigenvalue of A(G) exceeds -1 - √2 and every vertex of G has large valence, then the least eigenvalue is at least -2 and G is a generalized line graph. © 1997.
David W. Jacobs, Daphna Weinshall, et al.
IEEE Transactions on Pattern Analysis and Machine Intelligence
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Journal of Global Optimization
Martin Charles Golumbic, Renu C. Laskar
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