O(log log n)-time integer geometry on the CRCW PRAM

B. S. Chlebus, K. Diks, M. Kowaluk

Research output: Contribution to journalArticle

Abstract

We study problems in computational geometry on PRAMs under the assumption that input objects are specified by points with O(log n)-bit coordinates, or, equivalently, with polynomially bounded integer coordinates. We show that in this setting many geometric problems can be solved in time O(log log n). The following five specific problems are investigated:closest pair of points, intersection of convex polygons, intersection of manhattan line segments, dominating set, and largest empty square. Algorithms solving them are developed which operate in time O(log log n) on the arbitrary CRCW PRAM. The number of processors used is either O(n) or O(n log n).

Original languageEnglish (US)
Pages (from-to)52-69
Number of pages18
JournalAlgorithmica
Volume14
Issue number1
DOIs
StatePublished - Jul 1 1995
Externally publishedYes

Fingerprint

Computational geometry
Integer
Geometry
Intersection of lines
Convex polygon
Computational Geometry
Dominating Set
Line segment
Intersection
Arbitrary
Object

Keywords

  • Computational geometry
  • Highly parallelizable problems
  • PRAM

ASJC Scopus subject areas

  • Computer Science(all)
  • Computer Science Applications
  • Applied Mathematics

Cite this

Chlebus, B. S., Diks, K., & Kowaluk, M. (1995). O(log log n)-time integer geometry on the CRCW PRAM. Algorithmica, 14(1), 52-69. https://doi.org/10.1007/BF01300373

O(log log n)-time integer geometry on the CRCW PRAM. / Chlebus, B. S.; Diks, K.; Kowaluk, M.

In: Algorithmica, Vol. 14, No. 1, 01.07.1995, p. 52-69.

Research output: Contribution to journalArticle

Chlebus, BS, Diks, K & Kowaluk, M 1995, 'O(log log n)-time integer geometry on the CRCW PRAM', Algorithmica, vol. 14, no. 1, pp. 52-69. https://doi.org/10.1007/BF01300373
Chlebus, B. S. ; Diks, K. ; Kowaluk, M. / O(log log n)-time integer geometry on the CRCW PRAM. In: Algorithmica. 1995 ; Vol. 14, No. 1. pp. 52-69.
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