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Universal adjacency matrices with two eigenvalues
Haemers, Willem H.; Omidi, G. R. - 2010
Persistent link: https://www.econbiz.de/10008738467
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The maximum order of adjacency matrices with a given rank
Haemers, Willem H.; Peeters, M. J. P. - 2010
Persistent link: https://www.econbiz.de/10008746128
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The integral trees with spectral radius 3
Brouwer, A. E. (contributor); Haemers, Willem H. (contributor) - 2007
Persistent link: https://www.econbiz.de/10003674673
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Seidel switching and graph energy
Haemers, Willem H. - 2012
The energy of a graph T is the sum of the absolute values of the eigenvalues of the adjacency matrix of T. Seidel switching is an operation on the edge set of T. In some special cases Seidel switching does not change the spectrum, and therefore the energy. Here we investigate when Seidel...
Persistent link: https://www.econbiz.de/10009516701
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More about divisible design graphs
Crnković, Dean; Haemers, Willem H. - 2011
Persistent link: https://www.econbiz.de/10009389583
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Strongly regular graphs with maximal energy
Haemers, Willem H. (contributor) - 2007
Persistent link: https://www.econbiz.de/10003656721
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Enumeration of cospectral graphs
Haemers, Willem H. (contributor); Spence, Edward (contributor) - 2002 - [Elektronische Ressource]
Persistent link: https://www.econbiz.de/10001718054
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Which graphs are determined by their spectrum?
Dam, Edwin Robert van (contributor);  … - 2002 - [Elektronische Ressource]
Persistent link: https://www.econbiz.de/10001692468
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The Hermitian two-graph and its code
Haemers, Willem H. (contributor);  … - 2001 - [Elektronische Ressource]
Persistent link: https://www.econbiz.de/10001623251
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Equitable resolvable coverings
Dam, Edwin Robert van (contributor);  … - 2001 - [Elektronische Ressource]
Persistent link: https://www.econbiz.de/10001630567