Electronic Research Announcements

Author(s): Oliver Jenkinson
Journal: Electron. Res. Announc. Amer. Math. Soc. 13 (2007), 1-12.
MSC (2000): Primary 37A05, 37D20, 37E05; Secondary 37B10, 37E45, 37F15, 46A55
Posted: February 5, 2007
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Abstract: The set of $\times 2$ -invariant measures can be equipped with the partial order of majorization, describing relative dispersion. The minimal elements for this order are precisely the Sturmian measures of Morse and Hedlund. This yields new characterisations of Sturmian measures, and has applications to the ergodic optimization of convex functions.

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Oliver Jenkinson
Affiliation: School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK
Email: omj@maths.qmul.ac.uk

DOI: 10.1090/S1079-6762-07-00170-9
PII: S 1079-6762(07)00170-9
Keywords: Invariant measures, majorization, dilation, ergodic optimization
Received by editor(s): September 15, 2006
Posted: February 5, 2007
Additional Notes: The author was supported by an EPSRC Advanced Research Fellowship
Communicated by: Klaus Schmidt
Copyright of article: Copyright 2007, American Mathematical Society

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