Discrete and Computational Geometry
نویسنده
چکیده
An astral configuration (pq, nk) is a collection of p points and n straight lines, usually in the Euclidean plane, where every point is incident with q straight lines, every line is incident with k points, and there are precisely b q+1 2 c symmetry classes (transitivity classes) of lines and b 2 c symmetry classes of points. An odd astral configuration is an astral configuration where at least one of q and k is odd. This talk will discuss current known results about the existence of odd astral configurations where q and k are at least 4.
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تاریخ انتشار 2006