ArticleOriginal scientific text
Title
Semisimplicity, joinings and group extensions
Authors 1, 2, 2
Affiliations
- Department of Mathematics, University of Toronto, Toronto, Ontario, Canada M5S 1A1
- Department of Mathematics and Informatics, Nicholas Copernicus University, Chopina 12/18, 87-100 Toruń, Poland
Abstract
We present a theory of self-joinings for semisimple maps and their group extensions which is a unification of the following three cases studied so far:
(iii) Gaussian-Kronecker automorphisms: [Th], [Ju-Th].
(ii) MSJ and simple automorphisms: [Ru], [Ve], [Ju-Ru].
(iii) Group extension of discrete spectrum automorphisms: [Le-Me], [Le], [Me].
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