The Kearns--Saul inequality for Bernoulli and Poisson-binomial distributions
arXiv:1405.4496 · doi:10.1007/s10959-014-0564-x
Abstract
We give a direct rigorous proof of the Kearns--Saul inequality which bounds the Laplace transform of a generalised Bernoulli random variable. We extend the arguments to generalised Poisson-binomial distributions and characterise the set of parameters such that an analogous inequality holds for the sum of two generalised Bernoulli random variables.
11 pages, 3 figures; to appear in Journal of Theoretical Probability