Abstract
Let f : M → M be an Anosov diffeomorphism on a nilmanifold. We consider Birkhoff sums for a Hölder continuous observation along periodic orbits. We show that if there are two Birkhoff sums distributed at both sides of zero, then the set of Birkhoff sums of all the periodic points is dense in ℝ.
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Acknowledgements
The first author was supported by National Natural Science Foundation of China (Grant Nos. 11771025 and 11831001). The second author was supported by National Natural Science Foundation of China (Grant Nos. 12071007 and 11831001). The authors thank Jinpeng An for the valuable discussion and pointing out the reference [15] about the theory of Lie group.
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Gan, S., Shi, Y. & Xia, M. On the density of Birkhoff sums for Anosov diffeomorphisms. Sci. China Math. 65, 319–330 (2022). https://doi.org/10.1007/s11425-020-1858-9
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DOI: https://doi.org/10.1007/s11425-020-1858-9