Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-18T21:49:14.719Z Has data issue: false hasContentIssue false

Closed subgroups generated by generic measure automorphisms

Published online by Cambridge University Press:  08 January 2013

SŁAWOMIR SOLECKI*
Affiliation:
Department of Mathematics, 1409 W. Green St., University of Illinois, Urbana, IL 61801, USA (email: ssolecki@math.uiuc.edu)

Abstract

We prove that for a generic measure-preserving transformation $T$, the closed group generated by $T$ is a continuous homomorphic image of a closed linear subspace of $L_0(\lambda , {\mathbb R})$, where $\lambda $ is the Lebesgue measure, and that the closed group generated by $T$contains an increasing sequence of finite-dimensional tori whose union is dense.

Type
Research Article
Copyright
©2013 Cambridge University Press 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1]Ageev, O. N.. The generic automorphism of a Lebesgue space is conjugate to a $G$-extension for any finite abelian group $G$. Dok. Math. 62 (2000), 216219.Google Scholar
[2]Ageev, O. N.. On the genericity of some nonasymptotic dynamic properties. Russian Math. Surveys 58 (2003), 173174.Google Scholar
[3]Akcoglu, M. A., Chacon, R. V. and Schwartzbaur, T.. Commuting transformations and mixing. Proc. Amer. Math. Soc. 24 (1970), 637642.Google Scholar
[4]Fabec, R. C.. Fundamentals of Infinite Dimensional Representation Theory. Chapman & Hall/CRC, 2000.Google Scholar
[5]Farah, I. and Solecki, S.. Extreme amenability of $L_0$, a Ramsey theorem, and Lévy groups. J. Funct. Anal. 255 (2008), 471493.Google Scholar
[6]Glasner, E. and Weiss, B.. Spatial and non-spatial actions of Polish groups. Ergod. Th. & Dynam. Sys. 25 (2005), 15211538.Google Scholar
[7]Halmos, P. R.. In general a measure preserving transformation is mixing. Ann. of Math. (2) 45 (1944), 786792.CrossRefGoogle Scholar
[8]Katok, A. and Stepin, A. M.. Approximations in ergodic theory. Russian Math. Surveys 22 (1967), 77102.Google Scholar
[9]King, J.. The generic transformation has roots of all orders. Colloq. Math. 84/85 (2000), 521547.CrossRefGoogle Scholar
[10]Melleray, J. and Tsankov, T.. Generic representations of abelian groups and extreme amenability. Israel J. Math. to appear.Google Scholar
[11]Pedersen, G. K.. Analysis Now. Springer, Berlin, 1989.CrossRefGoogle Scholar
[12]de la Rue, T. and de Sam Lazaro, J.. Une transformation générique peut être insérée dans un flot. Ann. Inst. H. Poincaré Probab. Stat. 39 (2003), 121134.Google Scholar
[13]Stepin, A. M. and Eremenko, A. M.. Non-unique inclusion in a flow and vast centralizer of a generic measure-preserving transformation. Sb. Math. 195 (2004), 17951808.Google Scholar