Abstract
In this paper it is proved that
$$\sum\limits_{N = N + 1}^{N + H} {x(n)\psi (n) \ll _\varepsilon H^{1 - \tfrac{1}{r}} q^{\tfrac{1}{{4(r - 1)}} + \varepsilon } } ,$$
wherer=4,q is a prime power,χ andψ are multiplicative and additive characters moduloq respectively, withχ nontrivial.
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References
Burgess D A, Partial Gaussian sums II,Bull London Math Soc, 1989,21: 153–158.
Burgess D A, On a set of congruences related to character sums III,J London Math Soc, 1992,45: 201–214.
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Supported by the Natural Science Foundation of China.
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Chunlei, L. On incomplete Gaussian sums. Acta Mathematica Sinica 12, 141–150 (1996). https://doi.org/10.1007/BF02108155
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DOI: https://doi.org/10.1007/BF02108155