Oriented unicyclic graphs with extremal skew energy

Hou Yaoping, Shen Xiaoling, Zhang Chongyan

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)=…