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Published online by Cambridge University Press: 26 February 2010
Suppose we have a set
of n points P1, …, Pn in a unit square. Let

and let Sn be the upper bound of d1+…dn taken over all positions of P1, …, Pn in the square. We prove that

† Magyar Tud. Akad. Mat. Fiz. Oszt. Közl, 6 (1956), 185–191.Google Scholar