Ordering the oriented unicyclic graphs whose skew-spectral radius is bounded by 2
Ordering the oriented unicyclic graphs whose skew-spectral radius is bounded by 2
Abstract Let <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>S</mml:mi> <mml:mo>(</mml:mo> <mml:msup> <mml:mi>G</mml:mi> <mml:mi>σ</mml:mi> </mml:msup> <mml:mo>)</mml:mo> </mml:math> be the skew-adjacency matrix of an oriented graph <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>G</mml:mi> <mml:mi>σ</mml:mi> </mml:msup> </mml:math> with n vertices, and let <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>λ</mml:mi> <mml:mn>1</mml:mn> </mml:msub> <mml:mo>,</mml:mo> <mml:msub> <mml:mi>λ</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:mo>,</mml:mo> <mml:mo>…</mml:mo> <mml:mo>,</mml:mo> <mml:msub> <mml:mi>λ</mml:mi> <mml:mi>n</mml:mi> </mml:msub> …