Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-23T11:24:56.410Z Has data issue: false hasContentIssue false

Invariant Measures and Natural Extensions

Published online by Cambridge University Press:  20 November 2018

Andrew Haas*
Affiliation:
Department of Mathematics, The University of Connecticut, Storrs, Connecticut 06269-3009, U.S.A., email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We study ergodic properties of a family of interval maps that are given as the fractional parts of certain real Möbius transformations. Included are the maps that are exactly $n$-to-1, the classical Gauss map and the Renyi or backward continued fraction map. A new approach is presented for deriving explicit realizations of natural automorphic extensions and their invariant measures.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2002

References

[1] Adler, R. L. and Flatto, L., The backward continued fraction map and the geodesic flow. Ergodic Theory Dynamical Systems 4 (1984), 487492.Google Scholar
[2] Bosma, W., Jager, H. and Wiedijk, F., Some metrical observations on the approximation of continued factions. Indag.Math. 45 (1983), 281299.Google Scholar
[3] Cornfeld, I. P., Fomin, S. V. and Sinai, Ya. G., Ergodic Theory. Springer-Verlag, Berlin, Heidelberg, New York, 1982.Google Scholar
[4] de Melo, W. and van Strien, S., One-Dimensional Dynamics. ErgebnisseMath. 25, Springer-Verlag, Berlin, Heidelberg, New York, 1993.Google Scholar
[5] Gröchenig, K. and Haas, A., Backward continued fractions, invariant measures, and mappings of the interval. Ergodic Theory Dynamical Systems 16 (1996), 12411274.Google Scholar
[6] Gröchenig, K. and Haas, A., Backward continued fractions and their invariant measures. Canad. Math. Bull. 39 (1996), 186198.Google Scholar
[7] Gröchenig, K. and Haas, A., Invariant Measures for Certain Linear Fractional Transformations Mod 1. Proc. Amer. Math. Soc. 127 (1999), 34393444.Google Scholar
[8] Nakada, H., Metrical theory for a class of continued fraction transformations and their natural extensions. Tokyo J.Math. 4 (1981), 399426.Google Scholar
[9] Ornstein, D. S., Ergodic Theory, Randomness, and Dymanical Systems. Yale Univ. Press, New Haven, 1974.Google Scholar
[10] Parry, W., Entropy and generators in ergodic theory. Benjamin Inc., New York, Amsterdam, 1969.Google Scholar
[11] Rudolfer, S. M., Ergodic properties of linear fractional transformations mod one. Proc. London Math. Soc. 23 (1971), 515531.Google Scholar
[12] Rohlin, V. A., New Progress in the Theory of Transformations with Invariant Measure. Russian Math. Surveys (4) 15 (1960), 122.Google Scholar
[13] Rohlin, V. A., Exact endomorphisms of a Lebesgue space. Trans. Amer.Math. Soc. 39 (1964), 137.Google Scholar
[14] Rudolfer, S. M. and Wilkinson, K. M., A number-theoretic class of weak Bernoulli transformations. Math. Systems Theory 7 (1973), 1424 Google Scholar
[15] Rychlik, M., Bounded variation and invariant measures. Studia Math. 76 (1983), 6980.Google Scholar
[16] Series, C., The modular group and continued fractions. J. London Math. Soc. 31 (1985), 6980.Google Scholar
[17] Thaler, M., Transformations on [0, 1] with infinite invariant measure. Israel J. Math. 46 (1983), 6796.Google Scholar