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Oscillatory properties of arithmetical functions. II. (English) Zbl 0631.10026
In the first paper in this series [ibid. 48, 173–185 (1986; Zbl 0613.10036)] the authors proved that a real-valued function $$f(x)$$ has at least $$c(f) \log Y$$ sign-changes in the interval $$(0,Y]$$ provided that the analytic continuation of its Mellin transform has all of its singularities of a certain form. The purpose of this paper is to generalize this result for a much wider class of functions. The theorem has immediate applications to the theory of distribution of prime numbers, the oscillatory properties of the difference $$\pi(x)-li(x)$$, and of the similar difference for primes in an arithmetic progression.
Reviewer: W.E.Briggs

##### MSC:
 11N64 Other results on the distribution of values or the characterization of arithmetic functions 11N37 Asymptotic results on arithmetic functions 11N05 Distribution of primes 11N13 Primes in congruence classes
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##### References:
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