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Mathematics > Probability

arXiv:2208.06508 (math)
[Submitted on 12 Aug 2022]

Title:Noise stability on the Boolean hypercube via a renormalized Brownian motion

Authors:Ronen Eldan, Dan Mikulincer, Prasad Raghavendra
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Abstract:We consider a variant of the classical notion of noise on the Boolean hypercube which gives rise to a new approach to inequalities regarding noise stability. We use this approach to give a new proof of the Majority is Stablest theorem by Mossel, O'Donnell, and Oleszkiewicz, improving the dependence of the bound on the maximal influence of the function from logarithmic to polynomial. We also show that a variant of the conjecture by Courtade and Kumar regarding the most informative Boolean function, where the classical noise is replaced by our notion, holds true. Our approach is based on a stochastic construction that we call the renormalized Brownian motion, which facilitates the use of inequalities in Gaussian space in the analysis of Boolean functions.
Comments: 21 pages
Subjects: Probability (math.PR); Information Theory (cs.IT); Functional Analysis (math.FA)
Cite as: arXiv:2208.06508 [math.PR]
  (or arXiv:2208.06508v1 [math.PR] for this version)
  https://doi.org/10.48550/arXiv.2208.06508

Submission history

From: Dan Mikulincer [view email]
[v1] Fri, 12 Aug 2022 21:38:23 UTC (28 KB)
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