activity
20152023
most citedOrdering of bicyclic graphs by matching energy

7 citations · 33 across the 43 of their papers we have counts for

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Showing 2017Show all

6 papers · 1 filter

math.CO2017

Signless Laplacian spectral conditions for Hamilton-connected graphs with large minimum degree

Qiannan Zhou, Ligong Wang, Yong Lu

In this paper, we present a spectral sufficient condition for a graph to be Hamilton-connected in terms of signless Laplacian spectral radius with large minimum degree.

math.CO2017★ 1 cited

The rank of a complex unit gain graph in terms of the rank of its underlying graph

Yong Lu, Ligong Wang, Qiannan Zhou

Let be a complex unit gain graph (or -gain graph) and be its adjacency matrix, where is called the underlying graph of . The rank of , denot…

math.CO2017

Sufficient conditions for Hamilton-connected graphs in terms of (signless Laplacian) spectral radius

Qiannan Zhou, Ligong Wang, Yong Lu

In this paper, we present some spectral sufficient conditions for a graph to be Hamilton-connected in terms of the spectral radius or signless Laplacian spectral radius of the grap…

math.CO2017

The minimum Q-index of strongly connected bipartite digraphs with complete bipartite subdigraphs

Weige Xi, Ligong Wang

Let denote the set of strongly connected bipartite digraphs on vertices which contain a complete bipartite subdigraph , wher…

math.CO2017★ 7 cited

Ordering of bicyclic graphs by matching energy

Xiangxiang Liu, Ligong Wang, Peng Xiao

Let be a simple graph of order and be the roots of its matching polynomial. The matching energy is defined as the sum , wh…

math.CO2017★ 1 cited

Edge Connectivity, Packing Spanning Trees, and Eigenvalues of Graphs

Cunxiang Duan, Ligong Wang, Xiangxiang Liu

Let be the set of simple graphs (or multigraphs) such that for each there exists at least two non-empty disjoint proper subsets $V_{1},V_{2}\s…