Abstract
An L(p 1,p 2,p 3)-labeling of a graph G with span λ is a mapping f that assigns each vertex u of G an integer label 0 ≤ f(u) ≤ λ such that |f(u) − f(v)| ≥ p i whenever vertices u and v are of distance i for i ∈ {1,2,3}. We show that testing whether a given graph has an L(2,1,1)-labeling with some given span λ is NP-complete even for the class of trees.
Supported by EPSRC (EP/GO43434/1) and the Royal Society ((JP090172).
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Bertossi, A.A., Pinotti, M.C., Rizzi, R.: Channel assignment on strongly-simplicial graphs. In: 17th International Symposium on Parallel and Distributed Processing, p. 222. IEEE Computer Society, Washington (2003)
Calamoneri, T.: The L(h,k)-labelling problem: a survey and annotated bibliography. Comput. J. 49, 585–608 (2006)
Chang, G.J., Ke, W.T., Kuo, D., Liu, D.F., Yeh, R.K.: On L(d,1)-labelings of graphs. Discrete Math. 220, 57–66 (2000)
Chang, G.J., Kuo, D.: The L(2,1)-labeling problem on graphs. SIAM J. Discrete Math. 9, 309–316 (1996)
Courcelle, B.: The monadic second-order logic of graphs. I: recognizable sets of finite graphs. Inform. and Comput. 85, 12–75 (1990)
Fiala, J., Golovach, P.A., Kratochvíl, J.: Elegant distance constrained labelings of trees. In: Hromkovič, J., Nagl, M., Westfechtel, B. (eds.) WG 2004. LNCS, vol. 3353, pp. 58–67. Springer, Heidelberg (2004)
Fiala, J., Golovach, P.A., Kratochvíl, J.: Distance constrained labelings of graphs of bounded treewidth. In: Caires, L., Italiano, G.F., Monteiro, L., Palamidessi, C., Yung, M. (eds.) ICALP 2005. LNCS, vol. 3580, pp. 360–372. Springer, Heidelberg (2005)
Fiala, J., Golovach, P.A., Kratochvíl, J.: Computational complexity of the distance constrained labeling problem for trees. In: Aceto, L., Damgård, I., Goldberg, L.A., Halldórsson, M.M., Ingólfsdóttir, A., Walukiewicz, I. (eds.) ICALP 2008, Part I. LNCS, vol. 5125, pp. 294–305. Springer, Heidelberg (2008)
Fiala, J., Golovach, P.A., Kratochvíl, J.: Parameterized complexity of coloring problems: treewidth versus vertex cover. In: TAMC 2009. LNCS, vol. 5532, pp. 221–230. Springer, Heidelberg (2009)
Fiala, J., Kloks, T., Kratochvíl, J.: Fixed-parameter complexity of lambda-labelings. Discrete Appl. Math. 113, 59–72 (2001)
Fiala, J., Kratochvíl, J.: Partial covers of graphs. Discuss. Math. Graph Theory 22, 89–99 (2002)
Fiala, J., Kratochvíl, J., Proskurowski, A.: Distance constrained labeling of precolored trees. In: Restivo, A., Ronchi Della Rocca, S., Roversi, L. (eds.) ICTCS 2001. LNCS, vol. 2202, pp. 285–292. Springer, Heidelberg (2001)
Garey, M.R., Johnson, D.R.: Computers and Intractability. Freeman, New York (1979)
Golovach, P.A.: Systems of pairs of q-distant representatives, and graph colorings. Zap. Nauchn. Sem. S.-Peterburg. Otdel. Mat. Inst. Steklov (POMI) 293, 5–25 (2002)
Golovach, P.A.: Distance-constrained labelings of trees. Vestn. Syktyvkar. Univ. Ser. 1 Mat. Mekh. Inform. 6, 67–78 (2006)
Liu, D., Zhu, Z.: Circular distance two labellings and circular chromatic numbers. Ars Combin. 69, 177–183 (2003)
Yeh, R.K.: A survey on labeling graphs with a condition at distance two. Discrete Math. 306, 1217–1231 (2006)
Zhou, X., Kanari, Y., Nishizeki, T.: Generalized vertex-coloring of partial k-trees. IEICE Trans. Fundamentals of Electronics, Communication and Computer Sciences E83-A, 671–678 (2000)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Golovach, P.A., Lidický, B., Paulusma, D. (2010). L(2,1,1)-Labeling Is NP-Complete for Trees. In: Kratochvíl, J., Li, A., Fiala, J., Kolman, P. (eds) Theory and Applications of Models of Computation. TAMC 2010. Lecture Notes in Computer Science, vol 6108. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13562-0_20
Download citation
DOI: https://doi.org/10.1007/978-3-642-13562-0_20
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-13561-3
Online ISBN: 978-3-642-13562-0
eBook Packages: Computer ScienceComputer Science (R0)