In this section we will analyze the Fourier coefficients of $\mathrm{Maj}_n$. In fact, we give an explicit formula for them in Theorem 16 below. But most of the time this formula is not too useful; instead, it’s better to understand the Fourier coefficients of $\mathrm{Maj}_n$ asymptotically as $n \to \infty$.

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Ryan O'Donnell: Yes, thanks!Dmitry Sokolov: Exercise 28. Maybe $A \in \{-1, 1\}$ istead of $A \in \mathb...Ryan O'Donnell: Fixed, thanks!Ryan O'Donnell: It's the Holder conjugate of $q$ (i.e., the number satisfyin...Gautam Kamath: Is $q'$ defined here?Gautam Kamath: On this page, Hölder is displaying for me as H{ö}lder - is t...Ryan O'Donnell: Yes, you're right. This is not a well-written proof by the ...