Abstract
In 1996, Friedgut and Kalai made the Fourier Entropy– Influence Conjecture: For every Boolean function \(f : \{-1, 1\}^{n} \longrightarrow \{-1, 1\}\) it holds that \(H[{\widehat{f}}^{2}] \leq C \cdot I[f]\), where \(H[{\widehat{f}}^{2}]\) is the spectral entropy of f, I[f] is the total influence of f, and C is a universal constant. In this work we verify the conjecture for symmetric functions. More generally, we verify it for functions with symmetry group \(S_{n_1} \times \cdots \times S_{n_d}\) where d is constant. We also verify the conjecture for functions computable by read-once decision trees.
This research performed while the first author was a member of the School of Mathematics, Institute for Advanced Study. Supported by NSF grants CCF-0747250 and CCF-0915893, BSF grant 2008477, and Sloan and Okawa fellowships.
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O’Donnell, R., Wright, J., Zhou, Y. (2011). The Fourier Entropy–Influence Conjecture for Certain Classes of Boolean Functions. In: Aceto, L., Henzinger, M., Sgall, J. (eds) Automata, Languages and Programming. ICALP 2011. Lecture Notes in Computer Science, vol 6755. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22006-7_28
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DOI: https://doi.org/10.1007/978-3-642-22006-7_28
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