On the Signless Laplacian Spectral Radius of Graphs without Small Books and Intersecting Quadrangles
oleh: Ming-Zhu Chen, Ning Wang, A-Ming Liu, Aleksandr A. Makhnev
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2022-09-01 |
Deskripsi
In this paper, we determine the maximum signless Laplacian spectral radius of all graphs which do not contain small books as a subgraph and characterize all extremal graphs. In addition, we give an upper bound of the signless Laplacian spectral radius of all graphs which do not contain intersecting quadrangles as a subgraph.