Search Results - subject:"Cospectral graphs"

Cospectral Graphs and Regular Orthogonal Matrices of Level 2

Abiad Monge, A.; Haemers, W.H. - Tilburg University, Center for Economic Research - 2012

)] expect that almost all pairs of R-cospectral graphs are semi-isomorphic. Regular orthogonal matrices of level 2 have been … methods for constructions of R-cospectral graphs. For graphs with eight vertices all these constructions are carried out. As a …

Persistent link: https://www.econbiz.de/10011091545

Developments on Spectral Characterizations of Graphs

van Dam, Edwin Robert; Haemers, W.H. - Tilburg University, Center for Economic Research - 2007

In [E.R. van Dam and W.H. Haemers, Which graphs are determined by their spectrum?, Linear Algebra Appl. 373 (2003), 241-272] we gave a survey of answers to the question of which graphs are determined by the spectrum of some matrix associated to the graph. In particular, the usual adjacency...

Persistent link: https://www.econbiz.de/10011091435

Cospectral Graphs and the Generalized Adjacency Matrix

van Dam, Edwin Robert; Haemers, W.H.; Koolen, J.H. - Tilburg University, Center for Economic Research - 2006

AMS classifications: 05C50; 05E99;

Persistent link: https://www.econbiz.de/10011090815

Characterizing Distance-Regularity of Graphs by the Spectrum

van Dam, Edwin Robert; Haemers, W.H.; Koolen, J.H.; … - Tilburg University, Center for Economic Research - 2005

AMS classifications: 05E30; 05B20

Persistent link: https://www.econbiz.de/10011090355