Abstract
Let f be a primitive holomorphic cusp form of even integral weight for the full modular group \(\Gamma =SL(2,\mathbb {Z})\). And let \(\lambda _{f}(n)\) be the nth normalized Fourier coefficient of f. Let a(n) be the function with squarefull kernel. Let \(j\ge 2\) be any fixed positive integer. In this paper, we establish the following result:
where \(P_{A_{j}-1}(t)\) is polynomial of t with degree \(A_{j}-1\), and \(C_{f,j}>0\) is some suitable constant that can be explicitly evaluated.
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Acknowledgements
The author would like to express his sincere gratitude to Professor Guangshi Lü and Professor Bin Chen for their constant encouragement and valuable suggestions. The author is extremely grateful to the anonymous referees for their meticulous checking, for thoroughly reporting countless typos and inaccuracies as well as for their valuable comments. These corrections and additions have made the manuscript clearer and more readable.
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Hua, G. Higher power moments of shifted convolutions of Fourier coefficients involving squarefull kernel functions. Ramanujan J 60, 585–596 (2023). https://doi.org/10.1007/s11139-022-00603-2
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DOI: https://doi.org/10.1007/s11139-022-00603-2