Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Character sums to smooth moduli are small   Recently, Granville and Soundararajan have made fundamental breakthroughs in
the study of character sums. Building on their work and using estimates on
short character sums developed by Graham-Ringrose and Iwaniec, we improve the
Polya-Vinogradov inequality for characters with smooth conductor.

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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: cs
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The categories of this paper are: physics
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph