Bernoulli sums and R\'enyi entropy inequalities
Probability
2024-03-19 v2 Information Theory
Combinatorics
math.IT
Abstract
We investigate the R\'enyi entropy of independent sums of integer valued random variables through Fourier theoretic means, and give sharp comparisons between the variance and the R\'enyi entropy, for Poisson-Bernoulli variables. As applications we prove that a discrete ``min-entropy power'' is super additive on independent variables up to a universal constant, and give new bounds on an entropic generalization of the Littlewood-Offord problem that are sharp in the ``Poisson regime''.
Keywords
Cite
@article{arxiv.2103.00896,
title = {Bernoulli sums and R\'enyi entropy inequalities},
author = {Mokshay Madiman and James Melbourne and Cyril Roberto},
journal= {arXiv preprint arXiv:2103.00896},
year = {2024}
}