Abstract
We use Fourier analysis to get general lower bounds for the probabilistic communication complexity of large classes of functions. We give some examples showing how to use our method in some known cases and for some new functions.
Our main tool is an inequality by Kahn, Kalai, and Linial, derived from two lemmas of Beckner.
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Raz, R. Fourier analysis for probabilistic communication complexity. Comput Complexity 5, 205–221 (1995). https://doi.org/10.1007/BF01206318
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DOI: https://doi.org/10.1007/BF01206318