Abstract
Treewidth is the best studied and perhaps the most important of a large number of width metrics in graphs. In this chapter we will explore some other metrics which have proven useful.
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Notes
- 1.
As here we care about the exact parameter dependence the constants may vary depending on whether we parameterize by treewidth or branchwidth.
- 2.
Alon and Gutner show that a linear time algorithm for the problem for cycles of size 6 reduces to the classical problem for finding triangles in general graphs in time O(|V|2), a well known longstanding question.
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Downey, R.G., Fellows, M.R. (2013). Other Width Metrics. In: Fundamentals of Parameterized Complexity. Texts in Computer Science. Springer, London. https://doi.org/10.1007/978-1-4471-5559-1_16
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