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On the size of products of distances from prescribed points

Published online by Cambridge University Press:  24 October 2008

Paul Erdős
Affiliation:
Mathematical Institute of the Hungarian Academy of Sciences, Budapest, Reáltanoda u. 13–15, 1053, Hungary
Vilmos Totik
Affiliation:
Bolyai Institute, Szeged, Aradi v. tere 1, 6720, Hungary and Department of Mathematics, University of South Florida, Tampa, FL 33620, USA e-mail address: totik@inf.u-szeged.hu

Extract

The following problem was raised in the 1993 Miklós Schweitzer Mathematical Contest (see [4]). Let E be any connected set in the plane of diameter greater than 4, and let Z1, Z2, …, be any sequence of points on the plane. Then there is a point X ε E for which infinitely many of the products X¯Z¯1 · X¯Z¯n are greater than 1. Furthermore, the same is not necessarily true if the diameter of E is 4.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1996

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References

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