{"type":"journal_article","extern":"1","volume":7,"date_updated":"2021-01-12T08:19:51Z","language":[{"iso":"eng"}],"intvolume":"         7","publication_identifier":{"issn":["1079-6762"]},"title":"A stretched exponential bound on the rate of growth of the number of periodic points for prevalent diffeomorphisms I","quality_controlled":"1","doi":"10.1090/s1079-6762-01-00090-7","author":[{"id":"FE553552-CDE8-11E9-B324-C0EBE5697425","last_name":"Kaloshin","orcid":"0000-0002-6051-2628","first_name":"Vadim","full_name":"Kaloshin, Vadim"},{"full_name":"Hunt, Brian R.","first_name":"Brian R.","last_name":"Hunt"}],"_id":"8522","oa_version":"None","abstract":[{"lang":"eng","text":"For diffeomorphisms of smooth compact manifolds, we consider the problem of how fast the number of periodic points with period $n$grows as a function of $n$. In many familiar cases (e.g., Anosov systems) the growth is exponential, but arbitrarily fast growth is possible; in fact, the first author has shown that arbitrarily fast growth is topologically (Baire) generic for $C^2$ or smoother diffeomorphisms. In the present work we show that, by contrast, for a measure-theoretic notion of genericity we call ``prevalence'', the growth is not much faster than exponential. Specifically, we show that for each $\\delta > 0$, there is a prevalent set of ( $C^{1+\\rho}$ or smoother) diffeomorphisms for which the number of period $n$ points is bounded above by $\\operatorname{exp}(C n^{1+\\delta})$ for some $C$ independent of $n$. We also obtain a related bound on the decay of the hyperbolicity of the periodic points as a function of $n$. The contrast between topologically generic and measure-theoretically generic behavior for the growth of the number of periodic points and the decay of their hyperbolicity shows this to be a subtle and complex phenomenon, reminiscent of KAM theory."}],"publication_status":"published","publication":"Electronic Research Announcements of the American Mathematical Society","issue":"4","article_processing_charge":"No","keyword":["General Mathematics"],"date_created":"2020-09-18T10:49:56Z","month":"04","citation":{"ama":"Kaloshin V, Hunt BR. A stretched exponential bound on the rate of growth of the number of periodic points for prevalent diffeomorphisms I. <i>Electronic Research Announcements of the American Mathematical Society</i>. 2001;7(4):17-27. doi:<a href=\"https://doi.org/10.1090/s1079-6762-01-00090-7\">10.1090/s1079-6762-01-00090-7</a>","mla":"Kaloshin, Vadim, and Brian R. Hunt. “A Stretched Exponential Bound on the Rate of Growth of the Number of Periodic Points for Prevalent Diffeomorphisms I.” <i>Electronic Research Announcements of the American Mathematical Society</i>, vol. 7, no. 4, American Mathematical Society, 2001, pp. 17–27, doi:<a href=\"https://doi.org/10.1090/s1079-6762-01-00090-7\">10.1090/s1079-6762-01-00090-7</a>.","short":"V. Kaloshin, B.R. Hunt, Electronic Research Announcements of the American Mathematical Society 7 (2001) 17–27.","ieee":"V. Kaloshin and B. R. Hunt, “A stretched exponential bound on the rate of growth of the number of periodic points for prevalent diffeomorphisms I,” <i>Electronic Research Announcements of the American Mathematical Society</i>, vol. 7, no. 4. American Mathematical Society, pp. 17–27, 2001.","ista":"Kaloshin V, Hunt BR. 2001. A stretched exponential bound on the rate of growth of the number of periodic points for prevalent diffeomorphisms I. Electronic Research Announcements of the American Mathematical Society. 7(4), 17–27.","chicago":"Kaloshin, Vadim, and Brian R. Hunt. “A Stretched Exponential Bound on the Rate of Growth of the Number of Periodic Points for Prevalent Diffeomorphisms I.” <i>Electronic Research Announcements of the American Mathematical Society</i>. American Mathematical Society, 2001. <a href=\"https://doi.org/10.1090/s1079-6762-01-00090-7\">https://doi.org/10.1090/s1079-6762-01-00090-7</a>.","apa":"Kaloshin, V., &#38; Hunt, B. R. (2001). A stretched exponential bound on the rate of growth of the number of periodic points for prevalent diffeomorphisms I. <i>Electronic Research Announcements of the American Mathematical Society</i>. American Mathematical Society. <a href=\"https://doi.org/10.1090/s1079-6762-01-00090-7\">https://doi.org/10.1090/s1079-6762-01-00090-7</a>"},"day":"18","page":"17-27","year":"2001","status":"public","publisher":"American Mathematical Society","article_type":"original","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2001-04-18T00:00:00Z"}