The fact that the Fourier characters $\chi_{\gamma} : {\mathbb F}_2^n \to \{-1,1\}$ form a group isomorphic to ${\mathbb F}_2^n$ is not a coincidence; the analogous result holds for any finite abelian group and is a special case of the theory of Pontryagin duality in harmonic analysis. We will see further examples of this in Chapter [...]

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Matt Franklin: In the proof of Theorem 8.66 (middle of p. 225 in book), the...Matt Franklin: The "Condorcet Jury Theorem" is discussed but not named in t...Matt Franklin: In the first line of the proof of Proposition 8.45 (bottom o...Ryan O'Donnell: Great catch, thanks!Ryan O'Donnell: Thanks! The proofreader should have caught those!Ryan O'Donnell: Thanks -- I think that kind of parenthesis-free notation for...Ryan O'Donnell: Thanks! Unique Games is discussed somewhat in Chapter 7 of ...