= Gowers' theorem
{wiki=Gowers'_theorem}
Gowers' theorem, specifically known as Gowers' norm or Gowers' theorem on the "obstruction to regularity," is a result in the field of additive combinatorics. It is primarily concerned with the properties of functions over groups, particularly in the context of understanding the structure of large sets and their additive properties. The theorem is part of a broader study initiated by Timothy Gowers, particularly with his work on higher-order Fourier analysis.
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