Infoscience

Journal article

A note on coloring line arrangements

We show that the lines of every arrangement of n lines in the plane can be colored with O(root n/log n) colors such that no face of the arrangement is monochromatic. This improves a bound of Bose et al. by a circle minus(root/log n) factor. Any further improvement on this bound would also improve the best known lower bound on the following problem of Erdos: estimate the maximum number of points in general position within a set of n points containing no four collinear points.

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