Mathematics – Combinatorics
Scientific paper
2011-08-31
Mathematics
Combinatorics
10pages, 1 figure
Scientific paper
Let $\G$ be an oriented graph of order $n$ and $\a_1,\a_2,..., \a_n$ denote
all the eigenvalues of the skew-adjacency matrix of $\G.$ The skew energy
$\displaystyle{\cal E}_s(\G)= \sum_{i=1}^{n} |\a_i|.$
In this paper, the oriented unicyclic graphs with minimal and maximal skew
energy are determined.
Chongyan Zhang
Xiaoling Shen
Yaoping Hou
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