Abstract
Very recently Bordellès, Dai, Heyman, Pan and Shparlinski studied asymptotic behaviour of the quantity
and established some asymptotic formulas for \(S_f(x)\) under three different types of assumptions on f. In this short note we improve some of their results.
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References
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Acknowledgements
This work is supported in part by Scientific Research Innovation Team Project Affiliated to Yangtze Normal University (No. 2016XJTD01) and NSF of Chongqing (cstc2019jcyj-msxm1651).
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Wu, J. Note on a paper by Bordellès, Dai, Heyman, Pan and Shparlinski. Period Math Hung 80, 95–102 (2020). https://doi.org/10.1007/s10998-019-00300-6
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DOI: https://doi.org/10.1007/s10998-019-00300-6