Counting triangle crossings and halving planes

  • Authors:
  • Tamal K. Dey;Herbert Edelsbrunner

  • Affiliations:
  • -;-

  • Venue:
  • SCG '93 Proceedings of the ninth annual symposium on Computational geometry
  • Year:
  • 1993

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Abstract

Every collection of t ≥ 2n2 triangles witha total of n vertices in R3 has Wt4n6 crossing pairs. This implies that one of their edgesmeetsWt3n6 of the triangles. From this it followsthat n points in R3 have only O(n8/3) halvingplanes.