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Title: Maximal upper asymptotic density of sets of integers with missing differences from a given set (English)
Author: Pandey, Ram Krishna
Language: English
Journal: Mathematica Bohemica
ISSN: 0862-7959 (print)
ISSN: 2464-7136 (online)
Volume: 140
Issue: 1
Year: 2015
Pages: 53-69
Summary lang: English
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Category: math
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Summary: Let $M$ be a given nonempty set of positive integers and $S$ any set of nonnegative integers. Let $\overline \delta (S)$ denote the upper asymptotic density of $S$. We consider the problem of finding \[\mu (M):=\sup _{S}\overline \delta (S),\] where the supremum is taken over all sets $S$ satisfying that for each $a,b\in S$, $a-b \notin M.$ In this paper we discuss the values and bounds of $\mu (M)$ where $M = \{a,b,a+nb\}$ for all even integers and for all sufficiently large odd integers $n$ with $a<b$ and $\gcd (a,b)=1.$ (English)
Keyword: upper asymptotic density
Keyword: maximal density
MSC: 11B05
idZBL: Zbl 06433698
idMR: MR3324419
DOI: 10.21136/MB.2015.144179
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Date available: 2015-03-09T17:40:37Z
Last updated: 2020-07-29
Stable URL: http://hdl.handle.net/10338.dmlcz/144179
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