Abstract
In this chapter if a1 < a2 < … is an increasing sequence of positive integers, and A(x) denotes the number of its members not exceeding a given real x, then its upper density is defined to be lim sup x−1 A(x) as x→∞.
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© 1985 Springer-Verlag New York Inc.
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Elliott, P.D.T.A. (1985). Density Theorems. In: Arithmetic Functions and Integer Products. Grundlehren der mathematischen Wissenschaften, vol 272. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-8548-6_23
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DOI: https://doi.org/10.1007/978-1-4613-8548-6_23
Publisher Name: Springer, New York, NY
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Online ISBN: 978-1-4613-8548-6
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