This introductory text explores the theory of graph spectra: a topic with applications across a wide range of subjects, including computer science, quantum chemistry and electrical engineering. The spectra examined here are those of the adjacency matrix, the Seidel matrix, the Laplacian, the rmalized Laplacian and the signless Laplacian of a finite simple graph. The underlying theme of the book is the relation between the eigenvalues and structure of a graph. Designed as an introductory text for graduate students, or anyone using the theory of graph spectra, this self-contained treatment assumes only a little kwledge of graph theory and linear algebra. The authors include many developments in the field which arise as a result of rapidly expanding interest in the area. Exercises, spectral data and proofs of required results are also provided. The end-of-chapter tes serve as a practical guide to the extensive bibliography of over 500 items.
Dragos Cvetkovic is Professor in the Mathematical Institute at the Serbian Academy of Sciences and Arts, Belgrade. Peter Rowlinson is Emeritus Professor of Mathematics in the Department of Computing Science and Mathematics at the University of Stirling. Slobodan Simic is Full Research Professor in the Mathematical Institute at the Serbian Academy of Sciences and Arts, Belgrade.