Invariant measures for Anosov maps with small holes

Citation
N. Chernov et al., Invariant measures for Anosov maps with small holes, ERGOD TH DY, 20, 2000, pp. 1007-1044
Citations number
17
Categorie Soggetti
Mathematics
Journal title
ERGODIC THEORY AND DYNAMICAL SYSTEMS
ISSN journal
01433857 → ACNP
Volume
20
Year of publication
2000
Part
4
Pages
1007 - 1044
Database
ISI
SICI code
0143-3857(200008)20:<1007:IMFAMW>2.0.ZU;2-F
Abstract
We study Anosov diffeomorphisms on surfaces with small holes. The points th at are mapped into the holes disappear and never return. In our previous pa per we proved the existence of a conditionally invariant measure mu(+). Her e we show that the iterations of any initially smooth measure, after renorm alization, converge to mu(+). We construct the related invariant measure on the repeller and prove that it is ergodic and K-mixing. We prove the escap e rate formula, relating the escape rate to the positive Lyapunov exponent and the entropy.