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Journal Articles Journal of Number Theory Year : 2021

The convergence of certain Diophantine series


For x irrational, we study the convergence of series of the form n −s f (nx) where f is a real-valued, 1-periodic function which is continuous, except for singularities at the integers with a potential growth. We show that it is possible to fully characterize the convergence set and to approximate the series in terms of the continued fraction of x. This improves and generalizes recent results by Rivoal who studied the examples f (t) = cot(πt) and f (t) = sin −2 (πt).
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hal-04154176 , version 1 (06-07-2023)


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Fernando Chamizo, Bruno Martin. The convergence of certain Diophantine series. Journal of Number Theory, 2021, 229, pp.179-198. ⟨10.1016/j.jnt.2021.04.022⟩. ⟨hal-04154176⟩
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