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arxiv: 1108.6229 · v1 · pith:ILDCKD7Anew · submitted 2011-08-31 · 🧮 math.CO

Oriented unicyclic graphs with extremal skew energy

classification 🧮 math.CO
keywords energyorientedskewgraphsunicyclicdenotedetermineddisplaystyle
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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.

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