# American Institute of Mathematical Sciences

July  2012, 32(7): 2417-2436. doi: 10.3934/dcds.2012.32.2417

## Continued fractions, Cantor sets, Hausdorff dimension, and transfer operators and their analytic extension

 1 Mathematics Department, Texas A&M University, College Station, TX 77843-3368, United States

Received  December 2009 Revised  August 2011 Published  March 2012

We survey the dynamical systems side of the theory of continued fractions and touch on some of the frontiers of the subject. Ergodic theory plays a role. The work of Baladi and Vallée is discussed. Power series methods that allow for the computation of various numbers such as the Hausdorff dimension of a continued fraction Cantor set, or the Wirsing constant of a particular continued fraction algorithm, to high accuracy, are also discussed.
Citation: Doug Hensley. Continued fractions, Cantor sets, Hausdorff dimension, and transfer operators and their analytic extension. Discrete & Continuous Dynamical Systems - A, 2012, 32 (7) : 2417-2436. doi: 10.3934/dcds.2012.32.2417
##### References:
 [1] V. Baladi and B. Vallée, Euclidean algorithms are Gaussian,, J. Num. Th., 110 (2005), 331. doi: 10.1016/j.jnt.2004.08.008. Google Scholar [2] W. Bosma, H. Jager and F. Wiedijk, Some metrical observations on the approximation by continued fractions,, Nederl. Akad. Wetensch. Indag. Math., 45 (1983), 281. Google Scholar [3] J. Bourgain and A. Kontorovich, On Zaremba's Conjecture,, C. R. Math. Acad. Sci. Paris, 349 (2011), 493. Google Scholar [4] P. Flajolet and B. Vallée, On the Gauss-Kuzmin-Wirsing constant,, unpublished note, (1995). Google Scholar [5] H. Heilbronn, On the average length of a class of finite continued fractions,, in, (): 87. Google Scholar [6] D. Hensley, The distribution of badly approximable rationals and continuants with bounded digits. II,, J. Num. Th., 34 (1990), 293. doi: 10.1016/0022-314X(90)90139-I. Google Scholar [7] D. Hensley, A polynomial time algorithm for the Hausdorff dimension of continued fraction Cantor sets,, J. Num. Th., 58 (1996), 9. doi: 10.1006/jnth.1996.0058. Google Scholar [8] D. Hensley, The number of steps in the Euclidean algorithm,, J. Num. Th., 49 (1994), 142. doi: 10.1006/jnth.1994.1088. Google Scholar [9] D. Hensley, "Continued Fractions,'', World Scientific Publishing Co. Pte. Ltd., (2006). doi: 10.1142/9789812774682. Google Scholar [10] R. Nair, On metric Diophantine approximation and subsequence ergodic theory,, in, 3A (1997), 9. Google Scholar [11] F. Schweiger, "Multidimensional Continued Fractions,", Oxford Science Publications, (2000). Google Scholar [12] E. Wirsing, On the theorem of Gauss-Kusmin-Lévy and a Frobenius-type theorem for function spaces,, V. Acta Arith., 24 (): 507. Google Scholar

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##### References:
 [1] V. Baladi and B. Vallée, Euclidean algorithms are Gaussian,, J. Num. Th., 110 (2005), 331. doi: 10.1016/j.jnt.2004.08.008. Google Scholar [2] W. Bosma, H. Jager and F. Wiedijk, Some metrical observations on the approximation by continued fractions,, Nederl. Akad. Wetensch. Indag. Math., 45 (1983), 281. Google Scholar [3] J. Bourgain and A. Kontorovich, On Zaremba's Conjecture,, C. R. Math. Acad. Sci. Paris, 349 (2011), 493. Google Scholar [4] P. Flajolet and B. Vallée, On the Gauss-Kuzmin-Wirsing constant,, unpublished note, (1995). Google Scholar [5] H. Heilbronn, On the average length of a class of finite continued fractions,, in, (): 87. Google Scholar [6] D. Hensley, The distribution of badly approximable rationals and continuants with bounded digits. II,, J. Num. Th., 34 (1990), 293. doi: 10.1016/0022-314X(90)90139-I. Google Scholar [7] D. Hensley, A polynomial time algorithm for the Hausdorff dimension of continued fraction Cantor sets,, J. Num. Th., 58 (1996), 9. doi: 10.1006/jnth.1996.0058. Google Scholar [8] D. Hensley, The number of steps in the Euclidean algorithm,, J. Num. Th., 49 (1994), 142. doi: 10.1006/jnth.1994.1088. Google Scholar [9] D. Hensley, "Continued Fractions,'', World Scientific Publishing Co. Pte. Ltd., (2006). doi: 10.1142/9789812774682. Google Scholar [10] R. Nair, On metric Diophantine approximation and subsequence ergodic theory,, in, 3A (1997), 9. Google Scholar [11] F. Schweiger, "Multidimensional Continued Fractions,", Oxford Science Publications, (2000). Google Scholar [12] E. Wirsing, On the theorem of Gauss-Kusmin-Lévy and a Frobenius-type theorem for function spaces,, V. Acta Arith., 24 (): 507. Google Scholar
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