Corpus ID: 201657133

# Central limit theorems and the geometry of polynomials

@article{Michelen2019CentralLT,
title={Central limit theorems and the geometry of polynomials},
author={M. Michelen and J. Sahasrabudhe},
journal={arXiv: Probability},
year={2019}
}
• Published 2019
• Mathematics
• arXiv: Probability
Let $X \in \{0,\ldots,n \}$ be a random variable, with mean $\mu$ and standard deviation $\sigma$ and let $f_X(z) = \sum_{k} \mathbb{P}(X = k) z^k,$ be its probability generating function. Pemantle conjectured that if $\sigma$ is large and $f_X$ has no roots close to $1\in \mathbb{C}$ then $X$ must be approximately normal. We completely resolve this conjecture in the following strong quantitative form, obtaining sharp bounds. If $\delta = \min_{\zeta}|\zeta-1|$ over the complex roots \$\zeta… Expand
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