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Distinct gaps between fractional parts of sequences
Authors:Marian Vâ    itu   Alexandru Zaharescu
Affiliation:Institute of Mathematics of the Romanian Academy, P.O. Box 1-764, Bucharest 70700, Romania ; Institute of Mathematics of the Romanian Academy, P.O. Box 1-764, Bucharest 70700, Romania -- and -- Department of Mathematics, University of Illinois at Urbana-Champaign, Altgeld Hall, 1409 W. Green Street, Urbana, Illinois 61801
Abstract:Let $alpha$ be a real number, $N$ a positive integer and $mathcal N$a subset of ${0,1,2,dots,N}$. We give an upper bound for the number of distinct lengths of gaps between the fractional parts ${ nalpha },;nin mathcal N$.

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