Abstract
We present algorithmic lower bounds on the size s d of the largest independent sets of vertices in random d-regular graphs, for each fixed d ≥ 3. For instance, for d = 3 we prove that, for graphs on n vertices, s d ≥ 0.43475 n with probability approaching one as n tends to infinity.
Part of this work was carried out during a visit of the second author to the Australian National University (ANU). The authors wish to thank the Mathematical Sciences Institute at the ANU for its support.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Alekseev, V.E.: Polynomial algorithm for finding the largest independent sets in graphs without forks. Discrete Applied Mathematics 135(1-3), 3–16 (2004)
Assiyatun, H.: Large Subgraphs of Regular Graphs. PhD thesis, Department of Mathematics and Statistics - The University of Melbourne (2002)
Assiyatun, H., Wormald, N.: 3-star factors in random d-regular graphs. European Journal of Combinatorics 27(8), 1249–1262 (2006)
Assiyatun, H.: Maximum induced matchings of random regular graphs. In: Akiyama, J., Baskoro, E.T., Kano, M. (eds.) IJCCGGT 2003. LNCS, vol. 3330, pp. 44–57. Springer, Heidelberg (2005)
Baker, B.S.: Approximation algorithms for NP-complete problems on planar graphs. Journal of the Association for Computing Machinery 41(1), 153–180 (1994)
Berman, P., Fujito, T.: On approximation properties of the independent set problem for low degree graphs. Theory of Computing Systems 32(2), 115–132 (1999)
Bollobás, B., Erdős, P.: Cliques in random graphs. Mathematical Proceedings of the Cambridge Philosophical Society 80, 419–427 (1976)
Chen, Z.-Z.: Approximation algorithms for independent sets in map graphs. Journal of Algorithms 41(1), 20–40 (2001)
Frieze, A., McDiarmid, C.: Algorithmic theory of random graphs. Random Structures and Algorithms 10, 5–42 (1997)
Frieze, A.M.: On the independence number of random graphs. Discrete Mathematics 81(2), 171–175 (1990)
Frieze, A.M., Łuczak, T.: On the independence and chromatic number of random regular graphs. Journal of Combinatorial Theory B 54, 123–132 (1992)
Garey, M.R., Johnson, D.S.: Computer and Intractability, a Guide to the Theory of NP-Completeness. Freeman and Company (1979)
Gavril, F.: Algorithms for minimum coloring, maximum clique, minimum covering by cliques and maximum independent set of a chordal graph. SIAM Journal on Computing 1(2), 180–187 (1972)
Harris, T.E.: The Theory of Branching Processes. Springer, Heidelberg (1963)
Håstad, J.: Clique is hard to approximate within n 1 − ε. Acta Mathematica 182, 105–142 (1999)
Hunt, H.B., Marathe, M.V., Radhakrishnan, V., Ravi, S.S., Rosenkrantz, D.J., Stearns, R.E.: NC-approximation scheme for NP- and PSPACE-hard problems for geometric graphs. Journal of Algorithms 26, 238–274 (1998)
Janson, S., Łuczak, T., Ruciński, A.: Random Graphs. John Wiley and Sons, Chichester (2000)
McKay, B.D.: Independent sets in regular graphs of high girth. Ars Combinatoria 23A, 179–185 (1987)
Wormald, N.C.: Differential equations for random processes and random graphs. Annals of Applied Probability 5, 1217–1235 (1995)
Wormald, N.C.: Analysis of greedy algorithms on graphs with bounded degrees. Discrete Mathematics 273, 235–260 (2003)
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 2007 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Duckworth, W., Zito, M. (2007). Uncover Low Degree Vertices and Minimise the Mess: Independent Sets in Random Regular Graphs. In: Kučera, L., Kučera, A. (eds) Mathematical Foundations of Computer Science 2007. MFCS 2007. Lecture Notes in Computer Science, vol 4708. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74456-6_7
Download citation
DOI: https://doi.org/10.1007/978-3-540-74456-6_7
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-74455-9
Online ISBN: 978-3-540-74456-6
eBook Packages: Computer ScienceComputer Science (R0)