Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Convergent series of integers with missing digits   A classical theorem of Kempner states that the sum of the reciprocals of
positive integers with missing decimal digits converges. This result is
extended to much larger families of "missing digits" sets of positive integers
with convergent harmonic series.

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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an