An O(n log2 n) algorithm is presented to compute the characteristic polynomial of a tree on n vertices improving on the previously best quadratic time. With the same running time, the algorithm can be generalized in two directions. The algoritm is a counting algorithm, and the same ideas can be used to count other objects. For example, one can count the number of independent sets of all possible sizes simultaneously with the same running time. These counting algorithms not only work for trees, but can be extended to arbitrary graphs of bounded tree-width. © 2009 Springer Berlin Heidelberg.
CITATION STYLE
Fürer, M. (2009). Efficient computation of the characteristic polynomial of a tree and related tasks. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 5757 LNCS, pp. 11–22). https://doi.org/10.1007/978-3-642-04128-0_2
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