Department of Computer Science | Institute of Theoretical Computer Science | CADMO

Theory of Combinatorial Algorithms

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar (in cooperation with M. Ghaffari, A. Steger and B. Sudakov)

Mittagsseminar Talk Information

Date and Time: Thursday, November 02, 2006, 12:15 pm

Duration: This information is not available in the database

Location: CAB G51

Speaker: Andreas Razen

On the Number of Crossing-Free Partitions

We show that convex position of a point set P in the plane, with n = |P|, minimizes the number of crossing-free partitions into partition classes of certain sizes. A partition of a point set in the plane is called crossing-free, if the convex hulls of the individual parts do not intersect. We also prove that for all n >= 5, convex position of the underlying point set P does not maximize the total number of crossing-free partitions, and show some more astonishing facts.

Joint work with Emo Welzl.


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