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The inverse theorem for the U3 gowers uniformity norm on arbitrary finite abelian groups: fourier-analytic and ergodic approaches

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Jamneshan, Asgar

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Tao, Terence

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en

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We state and prove a quantitative inverse theorem for the Gowers uniformity norm U3(G) on an arbitrary finite abelian group G; the cases when G was of odd order or a vector space over F2 had previously been established by Green and the second author and by Samorodnitsky respectively by Fourier-analytic methods, which we also employ here. We also prove a qualitative version of this inverse theorem using a structure theorem of Host–Kra type for ergodic Zω-actions of order 2 on probability spaces established recently by Shalom and the authors. © 2023 Asgar Jamneshan, and Terence Tao

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Discrete Analysis

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Alliance of Diamond OA Journals

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Mathematics

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