Siméon-Denis (1781—1840), French mathematical physicist. His major contributions were in probability theory, in which he greatly improved Laplace's work and developed several concepts that are now named after him.
泊松,西梅翁-德尼(1781—1840,法国数学物理学家,其主要贡献在于概率论,他在这方面极大地改进了拉普拉斯的研究成果,提出了几个现在以他命名的概念)。