由$\mathbb{F}_q^n$上对角线性映射确定的函数平均熵的下界
组合数学
2012-10-02 v2 信息论
math.IT
摘要
本文证明,如果是任意函数,且在上均匀分布,则对取平均时,的Renyi熵(进而Shannon熵)至少约为。事实上,的平均碰撞概率至多约为。
引用
@article{arxiv.1105.3793,
title = {A lower bound on the average entropy of a function determined up to a diagonal linear map on F_q^n},
author = {Yaron Shany and Ram Zamir},
journal= {arXiv preprint arXiv:1105.3793},
year = {2012}
}
备注
second version with a considerably simplified proof of the main theorem and additional references. 6 pages