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A class of special flows over irrational rotations which is disjoint from mixing flows

Published online by Cambridge University Press:  09 August 2004

K. FRĄCZEK
Affiliation:
Faculty of Mathematics and Computer Science, Nicolaus Copernicus University, ul. Chopina 12/18, 87-100 Toruń, Poland (e-mail: [email protected], [email protected])
M. LEMAŃCZYK
Affiliation:
Faculty of Mathematics and Computer Science, Nicolaus Copernicus University, ul. Chopina 12/18, 87-100 Toruń, Poland (e-mail: [email protected], [email protected])

Abstract

It is proved that special flows over irrational rotations and under functions whose Fourier coefficients are of order O(1/|n|) are disjoint in the sense of Furstenberg from all mixing flows. This is an essential strengthening of a classical result by Kočergin on the absence of mixing of special flows built over irrational rotations and under bounded variation roof functions.

Type
Research Article
Copyright
2004 Cambridge University Press

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