Noise stability on the Boolean hypercube via a renormalized Brownian motion

Autor:	Eldan, Ronen, Mikulincer, Dan, Raghavendra, Prasad
Rok vydání:	2022
Předmět:	Mathematics - Probability Computer Science - Information Theory Mathematics - Functional Analysis
Druh dokumentu:	Working Paper
Popis:	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. Comment: 21 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2208.06508 Zobrazit plný text záznamu View this record from Arxiv