Cvetković, D. New theorems for signless Laplacian eigenvalues. (English) Zbl 1199.05212 Bull., Cl. Sci. Math. Nat., Sci. Math. 137, No. 33, 131-146 (2008). The author extends his previous surveys of properties of \(Q\)-spectrum (i.e., the spectrum of a graph based on its signless Laplacian matrix). Some new contributions are included. In particular, graphs whose largest eigenvalue (with respect to signless Laplacian) does not exceed \(4\) are characterized. The \(Q\)-spectra of all connected graphs on six vertices are given in Appendix. Reviewer: Slobodan Simić (Beograd) Cited in 19 Documents MSC: 05C50 Graphs and linear algebra (matrices, eigenvalues, etc.) Keywords:graph spectrum; subdivision graph; tree; unicyclic graph PDFBibTeX XMLCite \textit{D. Cvetković}, Bull., Cl. Sci. Math. Nat., Sci. Math. 137, No. 33, 131--146 (2008; Zbl 1199.05212) Full Text: EuDML