Skip to main content

Ergodic Infinite Permutations of Minimal Complexity

  • Conference paper
  • First Online:
Book cover Developments in Language Theory (DLT 2015)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 9168))

Included in the following conference series:

Abstract

An infinite permutation can be defined as a linear ordering of the set of natural numbers. Similarly to infinite words, a complexity p(n) of an infinite permutation is defined as a function counting the number of its factors of length n. For infinite words, a classical result of Morse and Hedlund, 1940, states that if the complexity of an infinite word satisfies \(p(n)\le n\) for some n, then the word is ultimately periodic. Hence minimal complexity of aperiodic words is equal to \(n+1\), and words with such complexity are called Sturmian. For infinite permutations this does not hold: There exist aperiodic permutations with complexity functions of arbitrarily slow growth, and hence there are no permutations of minimal complexity.

In the paper we introduce a new notion of ergodic permutation, i.e., a permutation which can be defined by a sequence of numbers from [0, 1], such that the frequency of its elements in any interval is equal to the length of that interval. We show that the minimal complexity of an ergodic permutation is \(p(n)=n\), and that the class of ergodic permutations of minimal complexity coincides with the class of so-called Sturmian permutations, directly related to Sturmian words.

S. Puzynina—Supported by the LABEX MILYON (ANR-10-LABX-0070) of Université de Lyon, within the program “Investissements d’Avenir” (ANR-11-IDEX-0007) operated by the French National Research Agency (ANR).

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 39.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Allouche, J.-P., Shallit, J.: Automatic sequences – theory, applications, generalizations. Cambridge University Press (2003)

    Google Scholar 

  2. Allouche, J.-P., Shallit, J.: The ubiquitous Prouhet-Thue-Morse sequence. In: Sequences and Their Applications, Discrete Mathematics and Theoretical Computer Science, pp. 1–16. Springer, London (1999)

    Google Scholar 

  3. Amigó, J.: Permutation Complexity in Dynamical Systems - Ordinal Patterns. Permutation Entropy and All That, Springer Series in Synergetics (2010)

    Google Scholar 

  4. Avgustinovich, S.V., Frid, A., Kamae, T., Salimov, P.: Infinite permutations of lowest maximal pattern complexity. Theoretical Computer Science 412, 2911–2921 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  5. Avgustinovich, S.V., Kitaev, S., Pyatkin, A., Valyuzhenich, A.: On square-free permutations. J. Autom. Lang. Comb. 16(1), 3–10 (2011)

    Google Scholar 

  6. Bandt, C., Keller, G., Pompe, B.: Entropy of interval maps via permutations. Nonlinearity 15, 1595–1602 (2002)

    Article  MathSciNet  Google Scholar 

  7. Cassaigne, J., Nicolas, F.: Factor complexity. Combinatorics, automata and number theory, Encyclopedia Math. Appl. 135, 163–247 (2010). Cambridge Univ. Press

    Article  MathSciNet  Google Scholar 

  8. Elizalde, S.: The number of permutations realized by a shift. SIAM J. Discrete Math. 23, 765–786 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  9. Ferenczi, S., Monteil, T.: Infinite words with uniform frequencies, and invariant measures. Combinatorics, automata and number theory. Encyclopedia Math. Appl. 135, 373–409 (2010). Cambridge Univ. Press

    MathSciNet  Google Scholar 

  10. Fon-Der-Flaass, D.G., Frid, A.E.: On periodicity and low complexity of infinite permutations. European J. Combin. 28, 2106–2114 (2007)

    Article  MathSciNet  Google Scholar 

  11. Frid, A.: Fine and Wilf’s theorem for permutations. Sib. Elektron. Mat. Izv. 9, 377–381 (2012)

    MathSciNet  Google Scholar 

  12. Frid, A., Zamboni, L.: On automatic infinite permutations. Theoret. Inf. Appl. 46, 77–85 (2012)

    Article  MathSciNet  Google Scholar 

  13. Kamae, T., Zamboni, L.: Sequence entropy and the maximal pattern complexity of infinite words. Ergodic Theory and Dynamical Systems 22, 1191–1199 (2002)

    MathSciNet  MATH  Google Scholar 

  14. Kamae, T., Zamboni, L.: Maximal pattern complexity for discrete systems. Ergodic Theory and Dynamical Systems 22, 1201–1214 (2002)

    MathSciNet  MATH  Google Scholar 

  15. Lothaire, M.: Algebraic combinatorics on words. Cambridge University Press (2002)

    Google Scholar 

  16. Makarov, M.: On permutations generated by infinite binary words. Sib. Elektron. Mat. Izv. 3, 304–311 (2006)

    MathSciNet  MATH  Google Scholar 

  17. Makarov, M.: On an infinite permutation similar to the Thue-Morse word. Discrete Math. 309, 6641–6643 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  18. Makarov, M.: On the permutations generated by Sturmian words. Sib. Math. J. 50, 674–680 (2009)

    Article  MathSciNet  Google Scholar 

  19. Morse, M., Hedlund, G.: Symbolic dynamics II: Sturmian sequences. Amer. J. Math. 62, 1–42 (1940)

    Article  MathSciNet  Google Scholar 

  20. Valyuzhenich, A.: On permutation complexity of fixed points of uniform binary morphisms. Discr. Math. Theoret. Comput. Sci. 16, 95–128 (2014)

    MathSciNet  MATH  Google Scholar 

  21. Widmer, S.: Permutation complexity of the Thue-Morse word. Adv. Appl. Math. 47, 309–329 (2011)

    Article  MathSciNet  Google Scholar 

  22. Widmer, S.: Permutation complexity related to the letter doubling map, WORDS (2011)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Svetlana Puzynina .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2015 Springer International Publishing Switzerland

About this paper

Cite this paper

Avgustinovich, S.V., Frid, A.E., Puzynina, S. (2015). Ergodic Infinite Permutations of Minimal Complexity. In: Potapov, I. (eds) Developments in Language Theory. DLT 2015. Lecture Notes in Computer Science(), vol 9168. Springer, Cham. https://doi.org/10.1007/978-3-319-21500-6_5

Download citation

  • DOI: https://doi.org/10.1007/978-3-319-21500-6_5

  • Published:

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-21499-3

  • Online ISBN: 978-3-319-21500-6

  • eBook Packages: Computer ScienceComputer Science (R0)

Publish with us

Policies and ethics