Efficient computation of the characteristic polynomial of a threshold graph

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Abstract

An efficient algorithm is presented to compute the characteristic polynomial of a threshold graph. Threshold graphs were introduced by Chvátal and Hammer, as well as by Henderson and Zalcstein in 1977.A threshold graph is obtained from a one vertex graph by repeatedly adding either an isolated vertex or a dominating vertex, which is a vertex adjacent to all the other vertices. Threshold graphs are special kinds of cographs, which themselves are special kinds of graphs of clique-width 2. We obtain a running time of O(n log2 n) for computing the characteristic polynomial, while the previously fastest algorithm ran in quadratic time.

Original languageEnglish (US)
Title of host publicationFrontiers in Algorithmics - 9th International Workshop, FAW 2015, Proceedings
EditorsChee Yap, Jianxin Wang
PublisherSpringer Verlag
Pages45-51
Number of pages7
ISBN (Print)9783319196466
DOIs
StatePublished - 2015
Event9th International Workshop on Frontiers in Algorithmics, FAW 2015 - Guilin, China
Duration: Jul 3 2015Jul 5 2015

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume9130
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other9th International Workshop on Frontiers in Algorithmics, FAW 2015
Country/TerritoryChina
CityGuilin
Period7/3/157/5/15

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • General Computer Science

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