机构:
Shandong Univ, Data Sci Inst, Jinan 250100, Shandong, Peoples R China
Shandong Univ, Sch Math, Jinan 250100, Shandong, Peoples R ChinaShandong Univ, Data Sci Inst, Jinan 250100, Shandong, Peoples R China
Huang, Bingrong
[1
,2
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机构:
[1] Shandong Univ, Data Sci Inst, Jinan 250100, Shandong, Peoples R China
[2] Shandong Univ, Sch Math, Jinan 250100, Shandong, Peoples R China
In this paper, we solve the Rankin-Selberg problem. That is, we break the well known Rankin-Selberg's bound on the error term of the second moment of Fourier coefficients of a GL(2) cusp form (both holomorphic and Maass), which remains its record since its birth for more than 80 years. We extend our method to deal with averages of coefficients of L-functions which can be factorized as a product of a degree one and a degree three L-functions.