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Bounds for short character sums for $GL(2) \times GL(3)$ twists

Number Theory 2024-12-04 v3

Abstract

Let π\pi be a SL(3,Z)SL(3,\mathbb{Z}) Hecke Maass-cusp form, ff be a SL(2,Z)SL(2,\mathbb{Z}) holomorphic cusp form or Maass-cusp form with normalized Fourier coefficients λπ(r,n) and λf(n)\lambda_{\pi}(r,n) \text{ and }\lambda_{f}(n) respectively and χ\chi be any non-trivial character mod pp where pp is a prime. Then we have Sπ,f,χ(N)π,f,ϵN3/4p11/16+η/4(Np)ϵ.S_{\pi ,f,\chi }(N)\ll_{\pi , f, \epsilon} N^{3/4}p^{11/16 +{\eta /4}}(Np)^\epsilon .

Keywords

Cite

@article{arxiv.2111.09524,
  title  = {Bounds for short character sums for $GL(2) \times GL(3)$ twists},
  author = {Aritra Ghosh},
  journal= {arXiv preprint arXiv:2111.09524},
  year   = {2024}
}

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