Signed graphs with small positive index of inertia

نویسندگان

  • Guihai Yu
  • Lihua Feng
  • Hui Qu
  • GUIHAI YU
  • LIHUA FENG
  • HUI QU
  • Leslie Hogben
چکیده

In this paper, the signed graphs with one positive eigenvalue are characterized, and the signed graphs with pendant vertices having exactly two positive eigenvalues are determined. As a consequence, the signed trees, the signed unicyclic graphs and the signed bicyclic graphs having one or two positive eigenvalues are characterized.

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تاریخ انتشار 2017