A SUFFICIENT CONDITION FOR THE ABSOLUTE
CONTINUITY OF CONJUGATION BETWEEN
CIRCLE HOMEOMORPHISMS WITH BREAKS

Abstract

Let $T_{1}$ and $T_{2}$ be circle homeomorphisms with countable many break points, that is, discontinuities in the derivative $T_{1}$ and $T_{2},$ with identical irrational rotation number $\rho.$ Assume that the total variations of $\log DT_{i},$ $i=1,2$ are bounded. We provide a sufficient condition for the absolute continuity of conjugation between $T_{1}$ and $T_{2}.$ The result extends and complements previous obtained results in [2] and [6].

Citation details of the article



Journal: International Journal of Applied Mathematics
Journal ISSN (Print): ISSN 1311-1728
Journal ISSN (Electronic): ISSN 1314-8060
Volume: 32
Issue: 2
Year: 2019

DOI: 10.12732/ijam.v32i2.2

Download Section



Download the full text of article from here.

You will need Adobe Acrobat reader. For more information and free download of the reader, please follow this link.

References

  1. [1] A. Adouani and H. Marzougui, Non-rigidity for circle homeomorphisms with several break points, Ergod. Th. & Dynam. Sys., (2017); https://doi.org/10.1017/etds.2017.121.
  2. [2] H. Akhadkulov, M.S. Noorani, A. Saaban and S. Akhatkulov, A necessary condition for the absolute continuity of invariant measure of circle maps with countably infinite number of break points, Far East J. Math., 101, No 3 (2017), 675-688.
  3. [3] H. Akhadkulov, A. Dzhalilov and K. Khanin, Notes on a theorem of Katznelson and Orstein, Dis. Con. Dyn. Sys., 37, No 9 (2017), 4587-4609.
  4. [4] H. Akhadkulov, A. Dzhalilov and D. Mayer, On conjugations of circle homeomorphisms with two break points, Ergod. Th. & Dynam. Sys., 34, No 3 (2014), 725-741.
  5. [5] Habibulla A.D. Akhadkulov and M.S. Md Noorani, On conjugacies between piecewise-smooth circle maps, Nonlinear Analysis: Theory, Methods & Applications, 99 (2014), 1-15.
  6. [6] H. Akhadkulov and M.S. Noorani, On absolute continuity of conjugations between circle maps with break points, Abst. Appl. Anal., 2012 (2012).
  7. [7] A. Dzhalilov, D. Mayer and U. Safarov, On the conjugation of piecewise smooth circle homeomorphisms with a finite number of break points, Nonlinearity, 28, No 7 (2015), 2441-2460.
  8. [8] I. Cornfeld, S. Fomin and Ya. Sinai, Ergodic Theory, Springer Verlag, Berlin (1982).
  9. [9] M. Herman, Sur la conjugaison diff´erentiable des diff´eomorphismes du cercle `a des rotations, Inst. Hautes Etudes Sci. Publ. Math., 49 (1979), 5-234.
  10. [10] Y. Katznelson and D. Ornstein, The differentiability of the conjugation of certain diffeomorphisms of the circle, Ergod. Theor. Dyn. Syst., 9 (1989), 643-680.
  11. [11] Y. Katznelson and D. Ornstein, The absolute continuite of the conjugation of certain diffeomorphisms of the circle, Ergod. Theor. Dyn. Syst., 9 (1989), 681-690.
  12. [12] K. Khanin and Ya. Sinai, Smoothness of conjugacies of diffeomorphisms of the circle with rotations, Russ. Math. Surv., 44 (1989), 69-99.
  13. [13] A. Khinchin, Continued Fractions, University of Chicago Press (1964).
  14. [14] A. Shiryayev, Probability, New York (1984).