Xixi Zhang

activity

20122021

most citedSome Evaluations of Parametric Euler Type Sums of Harmonic Numbers

8 citations · 9 across the 4 of their papers we have counts for

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Showing 2012Show all

2 papers · 1 filter

math.CO2012★ 1 cited

On the spectral moment of graphs with given clique number

Shuna Hu, Shuchao Li, Xixi Zhang

Let $L_{n, t}$ be the set of all $n$ -vertex connected graphs with clique number $t$ \,( $2 \leq t \leq n)$ . For $n$ -vertex connected graphs with given clique number, lexicogra…

math.CO2012

Edge-grafting theorems on permanents of the Laplacian matrices of graphs and their applications

Shuchao Li, Yan Li

The trees, respectively unicyclic graphs, on $n$ vertices with the smallest Laplacian permanent are studied. In this paper, by edge-grafting transformations, the $n$ -vertex trees o…