Ruifang Liu

activity

20142023

k

-factors and spanning trees of graphs

1 citations · 2 across the 19 of their papers we have counts for

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2 papers · 1 filter

math.CO2015

Graphs with small diameter determined by their $D$ -spectra

Ruifang Liu, Jie Xue

Let $G$ be a connected graph with vertex set $V (G) = {v_{1}, v_{2}, ..., v_{n}}$ . The distance matrix $D (G) = (d_{ij})_{n \times n}$ is the matrix indexed by the vertices of $G,$ where $…

math.CO2015★ 1 cited

On the second largest distance eigenvalue of a graph

Ruifang Liu, Jie Xue, Litao Guo

Let $G$ be a simple connected graph of order $n$ and $D (G)$ be the distance matrix of $G .$ Suppose that $λ_{1} (D (G)) \geq λ_{2} (D (G)) \geq \dots \geq λ_{n} (D (G))$ are the distance spect…

Graphs with small diameter determined by their D-spectra

On the second largest distance eigenvalue of a graph

Graphs with small diameter determined by their $D$ -spectra