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arxiv: 1304.7546 · v1 · pith:FMJF5APInew · submitted 2013-04-29 · 🧮 math.CO

The Kirchhoff indices and the matching numbers of unicyclic graphs

classification 🧮 math.CO
keywords graphskirchhoffgraphindexmatchingnumberunicyclicvertices
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The Kirchhoff index of a connected graph is the sum of resistance distances between all unordered pairs of vertices in the graph. It found considerable applications in a variety of fields. In this paper, we determine the minimum Kirchhoff index among the unicyclic graphs with fixed number of vertices and matching number, and characterize the extremal graphs.

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