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On sequences without geometric progressions
Author(s):
Brienne
E.
Brown;
Daniel
M.
Gordon.
Journal:
Math. Comp.
65
(1996),
1749--1754.
MSC (1991):
Primary 11B05;
Secondary 11B83
Posted:
October 1, 1996
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Abstract:
Several papers have investigated sequences which have no -term arithmetic progressions, finding bounds on their density and looking at sequences generated by greedy algorithms. Rankin in 1960 suggested looking at sequences without -term geometric progressions, and constructed such sequences for each with positive density. In this paper we improve on Rankin's results, derive upper bounds, and look at sequences generated by a greedy algorithm.
References:
- 1.
- P. Erd\H{o}s and P. Turán, On some sequences of integers, J. London Math. Soc. 11 (1936), 261--264.
- 2.
- Joeseph L. Gerver and L. Thomas Ramsey, Sets of integers with nonlong arithmetic progressions generated by the greedy algorithm, Math. Comp. 33 (1979), 1353--1359. MR 80k:10053
- 3.
- Joseph Gerver, James Propp, and Jamie Simpson, Greedily partitioning the natural numbers into sets free of arithmetic progressions, Proc. Amer. Math. Soc. 102 (1988), 765--772. MR 89f:11026
- 4.
- Richard K. Guy, Unsolved problems in number theory, second ed., Springer--Verlag, 1994. CMP 95:02
- 5.
- A. M. Odlyzko and R. P. Stanley, Some curious sequences constructed with the greedy algorithm, Bell Labs internal memo, 1978.
- 6.
- R. A. Rankin, Sets of integers containing not more than a given number of terms in arithmetical progression, Proc. Roy. Soc. Edinburgh Sect. A 65 (1960/61), 332--344. MR 26:95
- 7.
- K. F. Roth, On certain sets of integers, J. London Math. Soc. 28 (1953), 104--109. MR 14:536g
- 8.
- E. Szemerédi, On sets of integers containing no
elements in arithmetic progression, Acta Arith. 27 (1975), 199--245. MR 51:5547
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Additional Information:
Brienne
E.
Brown
Affiliation:
9211 Mintwood Street, Silver Spring, Maryland 20901
Daniel
M.
Gordon
Affiliation:
Center for Communications Research, 4320 Westerra Court San Diego, California 92121
Email:
gordon@ccrwest.org
DOI:
10.1090/S0025-5718-96-00765-X
PII:
S 0025-5718(96)00765-X
Posted:
October 1, 1996
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