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, October 02, 2014, 12:15 pm

Duration: 30 minutes

Location: CAB G51

Speaker: Jean Cardinal (Université Libre de Bruxelles)

General Position Subsets in d-space

In the sixties, Erdős posed the problem of finding a lower bound on the largest number of points in general position among any set of points in the plane with no four on a line. We consider variants of this question for d-dimensional point sets and generalize previously known bounds. In particular, we prove that every set of C(q^d)log q points in d-space, for some absolute constant C>0, contains q cohyperplanar points or q points in general position. This is a joint work with Csaba Tóth and David Wood.

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