Abstract
We prove that every pairwise independent joining of weakly mixing systems with purely singular spectrum is independent; it follows that every mixing system with purely singular spectrum is mixing of all orders.
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Host, B. Mixing of all orders and pairwise independent joinings of systems with singular spectrum. Israel J. Math. 76, 289–298 (1991). https://doi.org/10.1007/BF02773866
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DOI: https://doi.org/10.1007/BF02773866