Averages of coefficients of a class of degree 3 L-functions

@article{Huang2021AveragesOC,
  title={Averages of coefficients of a class of degree 3 L-functions},
  author={Bingrong Huang and Yongxiao Lin and Zhiwei Wang},
  journal={The Ramanujan Journal},
  year={2021},
  volume={57},
  pages={79-91}
}
In this note, we give a detailed proof of an asymptotic for averages of coefficients of a class of degree three L -functions which can be factorized as a product of a degree one and a degree two L -functions. We emphasize that we can break the 1/2-barrier in the error term, and we get an explicit exponent. Our proof relies on methods from the theory of exponential sums. 
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