Abstract
Our objective is to determine which subsets of ℝd arise as escaping sets of continuous functions from ℝd to itself. We obtain partial answers to this problem, particularly in one dimension, and in the case of open sets. We give a number of examples to show that the situation in one dimension is quite different from the situation in higher dimensions. Our results demonstrate that this problem is both interesting and perhaps surprisingly complicated.
Similar content being viewed by others
References
I. N. Baker, Infinite limits in the iteration of entire functions, Ergodic Theory Dynam. Systems 8 (1988), 503–507.
W. Bergweiler, Iteration of meromorphic functions, Bull. Amer. Math. Soc. (N. S. ) 29 (1993), 151–188.
W. Bergweiler, A. Fletcher, J. Langley and J. Meyer, The escaping set of a quasiregular mapping, Proc. Amer. Math. Soc. 137 (2009), 641–651.
A. E. Eremenko, On the iteration of entire functions, in Dynamical Systems and Ergodic Theory (Warsaw 1986), Banach Center Publications, Vol. 23, PWN, Warsaw, 1989, pp. 339–345.
W. Sierpiński, Sur une propriété topologique des ensembles dénombrables denses en soi, Fund. Math. 1 (1920), 11–16.
M. Vuorinen, Conformal Geometry and Quasiregular Mappings, Lecture Notes in Mathematics, Vol. 1319, Springer-Verlag, Berlin, 1988.
S. Willard, General Topology, Addison-Wesley, Reading, MA-London-Don Mills, ON, 1970.
Author information
Authors and Affiliations
Corresponding author
Additional information
The second author was supported by Engineering and Physical Sciences Research Council grant EP/L019841/1.
Rights and permissions
About this article
Cite this article
Short, I., Sixsmith, D.J. Escaping sets of continuous functions. JAMA 137, 875–896 (2019). https://doi.org/10.1007/s11854-019-0015-9
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11854-019-0015-9