Definition: Girth and Circumference
Let \(G(V,E)\) be a cyclic graph \(G\).
The girth of \(G\) is the length of the shortest cycle in \(G\).
The circumference of \(G\) is the length of the longest cycle in \(G\).
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References
Bibliography
 Aldous Joan M., Wilson Robin J.: "Graphs and Applications  An Introductory Approach", Springer, 2000