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Sets with No Empty Convex 7-Gons

Published online by Cambridge University Press:  20 November 2018

J. D. Horton*
Affiliation:
School of Computer Science, University of New Brunswick, FrederictonNew Brunswick, E3B 5A3
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Abstract

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Erdös has defined g(n) as the smallest integer such that any set of g(n) points in the plane, no three collinear, contains the vertex set of a convex n-gon whose interior contains no point of this set. Arbitrarily large sets containing no empty convex 7-gon are constructed, showing that g(n) does not exist for n≥l. Whether g(6) exists is unknown.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1983

References

1. Erdös, P. and Szekeres, G., A combinatorial problem in geometry, Compositio Math. 2 (1935), 463-470.Google Scholar
2. Erdös, P. and Szekeres, G., On some extremum problems in elementary geometry, Ann. Univ. Sci. Budapest 3–4 (1960-1) 53-62.Google Scholar
3. Harborth, H., Konvexe Funfecke in ebenen Punktmenger, Elem. Math. 33 (1978) 116-118.Google Scholar
4. Kalbfleisch, J. D., Kalbfleisch, J. G., and Stanton, R. G., A combinatorial problem on convex n-gons, Proc. Louisiana Conf. on Combinatorics Graph Theory, and Computing, Baton Rouge (1970), 180-188.Google Scholar
5. Moser, Wm., Research Problems in Geometry, McGill University, (1981) #29.Google Scholar