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Improved Hardness of Approximating Chromatic Number
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0002-1600-5290
2013 (English)In: Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques: 16th International Workshop, APPROX 2013, and 17th International Workshop, RANDOM 2013, Berkeley, CA, USA, August 21-23, 2013. Proceedings / [ed] Prasad Raghavendra, Sofya Raskhodnikova, Klaus Jansen, José D. P. Rolim, Springer, 2013, 233-243 p.Conference paper (Refereed)
Abstract [en]

We prove that for sufficiently large K, it is NP-hard to color K-colorable graphs with less than 2Ω(K 1/3) colors. This improves the previous result of K versus K1/25 log K in Khot [1].

Place, publisher, year, edition, pages
Springer, 2013. 233-243 p.
, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), ISSN 0302-9743 ; 8096
Keyword [en]
Chromatic number, K-colorable graphs, NP-hard
National Category
Computer Science
URN: urn:nbn:se:kth:diva-136350DOI: 10.1007/978-3-642-40328-6_17ScopusID: 2-s2.0-84885224075ISBN: 978-364240327-9OAI: diva2:675836
16th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems, APPROX 2013 and the 17th International Workshop on Randomization and Computation, RANDOM 2013; Berkeley, CA; United States; 21 August 2013 through 23 August 2013
EU, European Research Council, 6853

QC 20131206

Available from: 2013-12-04 Created: 2013-12-04 Last updated: 2013-12-05Bibliographically approved

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Huang, Sangxia
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