(Logarithmic) densities for automatic sequences along primes and squares
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- by Boris Adamczewski, Michael Drmota and Clemens Müllner PDF
- Trans. Amer. Math. Soc. 375 (2022), 455-499 Request permission
Abstract:
In this paper we develop a method to transfer density results for primitive automatic sequences to logarithmic-density results for general automatic sequences. As an application we show that the logarithmic densities of any automatic sequence along squares $(n^2)_{n\geq 0}$ and primes $(p_n)_{n\geq 1}$ exist and are computable. Furthermore, we give for these subsequences a criterion to decide whether the densities exist, in which case they are also computable. In particular in the prime case these densities are all rational. We also deduce from a recent result of the third author and Lemańczyk that all subshifts generated by automatic sequences are orthogonal to any bounded multiplicative aperiodic function.References
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Additional Information
- Boris Adamczewski
- Affiliation: Univ. Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5208, Institut Camille Jordan, 43 blvd. du 11 novembre 1918, F-69622 Villeurbanne cedex, France
- MR Author ID: 704234
- Email: boris.adamczewski@math.cnrs.fr
- Michael Drmota
- Affiliation: Institut für Diskrete Mathematik und Geometrie TU Wien, Wiedner Hauptstr. 8–10, 1040 Wien, Austria
- MR Author ID: 59890
- ORCID: 0000-0002-6876-6569
- Email: michael.drmota@tuwien.ac.at
- Clemens Müllner
- Affiliation: Institut für Diskrete Mathematik und Geometrie TU Wien, Wiedner Hauptstr. 8–10, 1040 Wien, Austria
- ORCID: 0000-0002-2984-6005
- Email: clemens.muellner@tuwien.ac.at
- Received by editor(s): September 30, 2020
- Received by editor(s) in revised form: April 13, 2021, and April 28, 2021
- Published electronically: October 8, 2021
- Additional Notes: The first and third authors were supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program under the Grant Agreement No 648132.
The second and third authors were supported by the Fond zur Förderung der wissenschaftlichen Forschung (FWF), grant SFB F55-02 "Subsequences of Automatic Sequences and Uniform Distribution" - © Copyright 2021 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 375 (2022), 455-499
- MSC (2020): Primary 11B85, 11L20, 11N05; Secondary 11A63, 11L03
- DOI: https://doi.org/10.1090/tran/8476
- MathSciNet review: 4358673