On the number of pseudo-triangulations of certain point sets

  • Authors:
  • Oswin Aichholzer;David Orden;Francisco Santos;Bettina Speckmann

  • Affiliations:
  • Institute for Software Technology, Graz University of Technology, Austria;Departamento de Matemáticas, Universidad de Alcalá, Spain;Departamento de Matemáticas, Estadística y Computación, Universidad de Cantabria, Spain;Department of Mathematics and Computer Science, TU Eindhoven, The Netherlands

  • Venue:
  • Journal of Combinatorial Theory Series A
  • Year:
  • 2008

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Abstract

We pose a monotonicity conjecture on the number of pseudo-triangulations of any planar point set, and check it on two prominent families of point sets, namely the so-called double circle and double chain. The latter has asymptotically 12^nn^@Q^(^1^) pointed pseudo-triangulations, which lies significantly above the maximum number of triangulations in a planar point set known so far.