5 papers
Lexicographical ordering by spectral moments of bicyclic hypergraphs
Hong Zhou, Changjiang Bu
For bicyclic hypergraphs, ordering by spectral moment (-order) is investigated in this paper. We give the first and last hypergraphs in an -order of linear bicyclic uniform h…
Extremal Zagreb indices of bicyclic hypergraphs
Hong Zhou, Changjiang Bu
The Zagreb index of a hypergraph is defined as the sum of the squares of the degrees of its vertices. A connected -uniform hypergraph with vertices and edges is called b…
Lexicographical ordering of hypergraphs via spectral moment
Hong Zhou, Changjiang Bu
The lexicographical ordering of hypergraphs via spectral moments is called the -order of hypergraphs.In this paper, the -order of hypergraphs is investigated.We characterize…
Estrada index and subgraph centrality of hypergraphs via tensors
Hong Zhou, Lizhu Sun, Changjiang Bu
Uniform hypergraphs have a natural one-to-one correspondence to tensors. In this paper, we investigate the Estrada index and subgraph centrality of an -uniform hypergraph $\math…
Parametrizations of Positive Matrices With Applications
M. C. Tseng, Hong Zhou, V. Ramakrishna
This paper reviews some characterizations of positive matrices and discusses which lead to useful parametrizations. It is argued that one of them, which we dub the Schur-Constantin…