Publications of (and about) Paul Erdös
Autor: Erdös, Paul; Purdy, G.
Title: Some extremal problems in geometry (In English)
Source: J. Comb. Theory, Ser. A 10, 246-252 (1971).
Review: The authors investigate several geometrical problems of a combinatorial flavour. Let be given n points in the plane. Then they determine at most 4n5/2 triangles which have the same non-zero area. On the other hand one can find n points in the plane which determine cn2 log log n triangles having the same non zero area.
Several other related results are proved and many unsolved problems are stated.
Classif.: * 05B25 Finite geometries (combinatorics)
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