School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel and Courant Institute of Mathematical Sciences, New York University, New York, NY 10012, USA (e-mail: michas@post.tau.ac.il)
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We show that the number of halving sets of a set of n points in ℝ4 is O(n4−1/18), improving the previous bound of [10] with a simpler (albeit similar) proof.
[1]Agarwal, P., Aronov, B., Chan, T. and Sharir, M. (1998) On levels in arrangements of lines, segments, planes, and triangles. Discrete Comput. Geom.19315–331.CrossRefGoogle Scholar
[2]
[2]Ajtai, M., Chvátal, V., Newborn, M. M. and Szemerédi, E. (1982) Crossing-free subgraphs. Ann. Discrete Math.129–12.Google Scholar
[3]
[3]Andrzejak, A. and Welzl, E. (2003) In between k-sets, j-facets, and i-faces: (i, j)-partitions. Discrete Comput. Geom.29105–131.CrossRefGoogle Scholar
[4]
[4]Blagojeviç, V. M., Matschke, B. and Ziegler, G. M. Optimal bounds for the colored Tverberg problem. arXiv:0910.4987Google Scholar
[5]
[5]Dey, T. (1998) Improved bounds for planar k-sets and related problems. Discrete Comput. Geom.19373–382.CrossRefGoogle Scholar
[6]
[6]Erdős, P., Lovász, L., Simmons, A. and Strauss, E. G. (1973) Dissection graphs of planar point sets. In Survey Combinat. Theory, Sympos. (Colorado State University1971), pp. 139–149.CrossRefGoogle Scholar
[7]
[7]Leighton, F. T. (1983) Complexity Issues in VLSI, Foundations of Computing series, MIT Press.Google Scholar
[8]
[8]Lovász, L. (1971) On the number of halving lines. Ann. Univ. Sci. Budapest Rolando Eötvös Nom., Sec. Math.14107–108.Google Scholar
[9]
[9]Matoušek, J. (2002) Lectures on Discrete Geometry, Graduate Texts in Mathematics, Springer.CrossRefGoogle Scholar
[10]
[10]Matoušek, J., Sharir, M., Smorodinsky, S. and Wagner, U. (2006) On k-sets in four dimensions. Discrete Comput. Geom.35177–191.CrossRefGoogle Scholar
[11]
[11]Nivasch, G. (2008) An improved, simple construction of many halving edges. In Surveys on Discrete and Computational Geometry: Twenty Years Later (Goodman, J. E. et al. , eds), Vol. 453 of Contemporary Mathematics, AMS, pp. 299–305.CrossRefGoogle Scholar
[12]
[12]Sharir, M., Smorodinsky, S. and Tardos, G. (2001) An improved bound for k-sets in three dimensions. Discrete Comput. Geom.26195–204.CrossRefGoogle Scholar
[13]
[13]Tóth, G. (2001) Point sets with many k-sets. Discrete Comput. Geom.26187–194.CrossRefGoogle Scholar
[14]
[14]Živaljević, R. T. and Vrećica, S. T. (1992) The colored Tverberg theorem and complexes of injective functions. J. Combin. Theory Ser. A61309–318.CrossRefGoogle Scholar