ArticleOriginal scientific text
Title
Sur l'absence de mélange pour des flots spéciaux au-dessus d'une rotation irrationnelle
Authors 1
Affiliations
- Département de Mathématiques et d'Informatique, Université Nicolas Copernic, 12/18 rue Chopin, 87-100 Toruń, Pologne
Abstract
We prove the absence of mixing for special flows built over (1) an irrational rotation and under a function whose Fourier coefficients are of order O(1/|n|), and (2) an irrational rotation (satisfying a diophantine condition) and under a function having a finite number of singularities of a logarithmic type. These results generalize two theorems of Kochergin.
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