Abstract
We present a practical framework to prove, in a simple way, two-term asymptotic expansions for Fourier integrals
where \(\mu \) is a probability measure on \({{\mathbb {R}}}\) and \(\phi \) is measurable. This applies to many basic cases, in link with Levy’s continuity theorem. We present applications to limit laws related to rational continued fraction coefficients.
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Acknowledgements
The authors thank the referee for his or her remarks and a careful reading of the paper. This paper was partially written during a visit of S. Bettin at the Aix-Marseille University and a visit of S. Drappeau at the University of Genova. The authors thank both Institution for the hospitality and Aix-Marseille University and INdAM for the financial support for these visits.
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S. Bettin is a member of the INdAM group GNAMPA and his work is partially supported by PRIN 2017 “Geometric, algebraic and analytic methods in arithmetic”. This work has benefitted from support by Aix-Marseille Université through Fonds d’Intervention Recherche Invités.
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Bettin, S., Drappeau, S. Effective estimation of some oscillatory integrals related to infinitely divisible distributions. Ramanujan J 57, 849–861 (2022). https://doi.org/10.1007/s11139-020-00362-y
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DOI: https://doi.org/10.1007/s11139-020-00362-y
Keywords
- Fourier integral
- Characteristic function
- Infinitely divisible distribution
- Asymptotic expansion
- Limit law