Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Counting numbers in multiplicative sets: Landau versus Ramanujan   A set S of integers is said to be multiplicative if for every pair m and n of
coprime integers we have that mn is in S iff both m and n are in S. Both Landau
and Ramanujan gave approximations to S(x), the number of n<=x that are in S,
for specific choices of S. The asymptotical precision of their respective
approaches are being compared and related to Euler-Kronecker constants, a
generalization of Euler's constant gamma=0.57721566.... This paper claims
little originality, its aim is to give a survey on the literature related to
this theme with an emphasis on the contributions of the author (and his
coauthors).

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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int