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math.DS2021
Decomposition of multicorrelation sequences and joint ergodicity
Sebastián Donoso, Andreu Ferré Moragues, Andreas Koutsogiannis +1
We show that, under finitely many ergodicity assumptions, any multicorrelation sequence defined by invertible measure preserving -actions with multivariable integer p…
math.DS2021
Additive averages of multiplicative correlation sequences and applications
Sebastián Donoso, Anh N. Le, Joel Moreira +1
We study sets of recurrence, in both measurable and topological settings, for actions of and . In particular, we show that autocorre…