English

On the spectral radius of uniform weighted hypergraph

Combinatorics 2022-03-01 v1

Abstract

Let Qk,n\mathbb{Q}_{k,n} be the set of the connected kk-uniform weighted hypergraphs with nn vertices, where k,n3k,n\geq 3. For a hypergraph GQk,nG\in \mathbb{Q}_{k,n}, let A(G)\mathcal{A}(G), L(G)\mathcal{L} (G) and Q(G)\mathcal{Q} (G) be its adjacency tensor, Laplacian tensor and signless Laplacian tensor, respectively. The spectral radii of A(G)\mathcal{A}(G) and Q(G)\mathcal{Q} (G) are investigated. Some basic properties of the HH-eigenvalue, the H+H^{+}-eigenvalue and the H++H^{++}-eigenvalue of A(G)\mathcal{A}(G), L(G)\mathcal{L} (G) and Q(G)\mathcal{Q} (G) are presented. Several lower and upper bounds of the HH-eigenvalue, the H+H^{+}-eigenvalue and the H++H^{++}-eigenvalue for A(G)\mathcal{A}(G), L(G)\mathcal{L} (G) and Q(G)\mathcal{Q} (G) are established. The largest H+H^{+}-eigenvalue of L(G)\mathcal{L} (G) and the smallest H+H^{+}-eigenvalue of Q(G)\mathcal{Q} (G) are characterized. A relationship among the HH-eigenvalues of L(G)\mathcal{L} (G), Q(G)\mathcal{Q} (G) and A(G)\mathcal{A} (G) is also given.

Keywords

Cite

@article{arxiv.2202.13272,
  title  = {On the spectral radius of uniform weighted hypergraph},
  author = {Rui Sun and Wen-Huan Wang},
  journal= {arXiv preprint arXiv:2202.13272},
  year   = {2022}
}