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most citedMultiparameter ergodic averages for two commuting actions of an amenable group

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math.FA2018

Bohr sets in triple products of large sets in amenable groups

Michael Björklund, John T. Griesmer

We answer a question of Hegyvári and Ruzsa concerning effective estimates of the Bohr-regularity of certain triple sums of sets with positive upper Banach densities in the integers…