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\(\varepsilon \)-Mnets: Hitting Geometric Set Systems with Subsets

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Abstract

The existence of Macbeath regions is a classical theorem in convex geometry  (Macbeath in Ann Math 56:269–293, 1952), with recent applications in discrete and computational geometry. In this paper, we initiate the study of Macbeath regions in a combinatorial setting and establish near-optimal bounds for several basic geometric set systems.

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References

  1. Agarwal, P.K., Pach, J., Sharir, M.: State of the union (of geometric objects): a review. In: Goodman, J., Pach, J., Pollack, R. (eds.) Computational Geometry: Twenty Years Later, pp. 9–48. AMS, Providence, RI (2008)

  2. Aronov, B., Ezra, E., Sharir, M.: Small-size \(\epsilon \)-nets for axis-parallel rectangles and boxes. SIAM J. Comput. 39(7), 3248–3282 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  3. Arya, S., da Fonseca, G.D., Mount, D.: Optimal area-sensitive bounds for polytope approximation. In: Proceedings of the ACM Symposium on Computational Geometry (SoCG), pp. 363–372 (2012)

  4. Bárány, I.: Random polytopes, convex bodies, and approximation. In: Baddeley, A. (ed.) Stochastic Geometry, pp. 77–118. Springer, New York (2007)

  5. Bárány, I., Larman, D.G.: Convex bodies, economic cap coverings, random polytopes. Mathematika 35, 274–291 (1988)

    Article  MathSciNet  MATH  Google Scholar 

  6. Brönnimann, H., Chazelle, B., Pach, J.: How hard is half-space range searching? Discrete Comput. Geom. 10, 143–155 (1993)

    Article  MathSciNet  MATH  Google Scholar 

  7. Chazelle, B.: The Discrepancy Method: Randomness and Complexity. Cambridge University Press, Cambridge (2000)

    Book  MATH  Google Scholar 

  8. Chekuri, C., Clarkson, K.L., Har-Peled, S.: On the set multi-cover problem in geometric settings. In: Proceedings of the ACM Symposium on Computational Geometry (SoCG), pp. 341–350 (2009)

  9. Ewald, G., Larman, D.G., Rogers, C.A.: The directions of the line segments and of the r-dimensional balls on the boundary of a convex body in euclidean space. Mathematika 17, 1–20 (1970)

    Article  MathSciNet  MATH  Google Scholar 

  10. Haussler, D., Welzl, E.: Epsilon-nets and simplex range queries. Discrete Comput. Geom. 2, 127–151 (1987)

    Article  MathSciNet  MATH  Google Scholar 

  11. Komlós, J., Pach, J., Woeginger, G.: Almost tight bounds for epsilon nets. Discrete Comput. Geom. 7, 163–173 (1992)

    Article  MathSciNet  MATH  Google Scholar 

  12. Kupavskii, A., Mustafa, N.H., Pach, J.: New lower bounds for epsilon-nets. In: Proceedings of the International Symposium on Computational Geometry (SoCG) (2016)

  13. Macbeath, A.M.: A theorem on non-homogeneous lattices. Ann. Math. 56, 269–293 (1952)

    Article  MathSciNet  MATH  Google Scholar 

  14. Matoušek, J.: Efficient partition trees. Discrete Comput. Geom. 8, 315–334 (1992)

    Article  MathSciNet  MATH  Google Scholar 

  15. Matoušek, J.: Reporting points in halfspaces. Comput. Geom. 2(3), 169–186 (1992)

    Article  MathSciNet  MATH  Google Scholar 

  16. Matoušek, J.: Geometric Discrepancy: An Illustrated Guide. Springer, New York (1999)

    Book  MATH  Google Scholar 

  17. Matoušek, J.: Lectures in Discrete Geometry. Springer, New York (2002)

    Book  MATH  Google Scholar 

  18. Mustafa, N.H.: A simple proof of the shallow packing lemma. Discrete Comput. Geom. 55(3), 739–743 (2016)

    Article  MathSciNet  MATH  Google Scholar 

  19. Mustafa, N.H., Ray, S.: Near-optimal generalisations of a theorem of Macbeath. In: Proceedings of the International Symposium on Theoretical Aspects of Computer Science (STACS), pp. 578–589 (2014)

  20. Pach, J., Agarwal, P.K.: Combinatorial Geometry. Wiley, New York (1995)

    Book  MATH  Google Scholar 

  21. Pach, J., Tardos, G.: Tight lower bounds for the size of epsilon-nets. J. Am. Math. Soc. 26, 645–658 (2013)

    Article  MathSciNet  MATH  Google Scholar 

  22. Pyrga, E., Ray, S.: New existence proofs for epsilon-nets. In: Proceedings of the ACM Symposium on Computational Geometry (SoCG), pp. 199–207 (2008)

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Acknowledgements

The work of Nabil H. Mustafa in this paper has been supported by the Grant ANR SAGA (JCJC-14-CE25-0016-01).

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Correspondence to Nabil H. Mustafa.

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Editor in Charge: János Pach

A preliminary version of this article appeared in [19].

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Mustafa, N.H., Ray, S. \(\varepsilon \)-Mnets: Hitting Geometric Set Systems with Subsets. Discrete Comput Geom 57, 625–640 (2017). https://doi.org/10.1007/s00454-016-9845-8

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  • DOI: https://doi.org/10.1007/s00454-016-9845-8

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