Lagrange
/læˈgrɒŋʒ/- Lagrange, Joseph Louis, Comte de (1736-1813), Italian-born French mathematician. He is remembered for his proof that every positive integer can be expressed as a sum of at most four squares, and for his work on mechanics and its application to the description of planetary and lunar motion.拉格朗日, 约瑟夫·路易伯爵（1736-1813, 意大利出生的法国数学家, 因证明每个正整数只能表示为至多四个平方之和, 也因力学研究和其在描述行星和月球运行方面的应用而留名于世）。