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Dec 14, 2022 at 17:17 history became hot network question
Dec 14, 2022 at 14:51 comment added mathworker21 To say it explicitly, you can prove the upper Banach density version from the upper density version by showing the latter is equivalent to the finitary form in the parenthetical in Thomas's answer, which is equivalent to the other finitary form in Thomas's answer, which is equivalent to the upper Banach density version.
Dec 14, 2022 at 10:40 vote accept Dominic van der Zypen
Dec 14, 2022 at 9:32 answer added Thomas Bloom timeline score: 8
Dec 14, 2022 at 9:07 comment added Martin Sleziak Isn't this result actually often formulated with upper Banach density? (Maybe with the names Furstenberg and Katznelson.) Google, Google Books, Google Scholar.
Dec 14, 2022 at 8:58 history asked Dominic van der Zypen CC BY-SA 4.0