关于明安图一项数学成就的几点评注

本文从多个方面分析了罗见今的论断:中国清朝数学家明安图是组合数学重要的Catalan数的第一发现和研究者.同时给出了明安图所得结果的一般形式.     

The Exceptional Set in Hua＇s Theorem for Three Squares of Primes

It is proved that with at most O(N^11/12 c) exceptions, all positive integers n ≤ N satisfying some necessary congruence conditions are the sum of three squares of primes. This improves substantially the previous results in this direction.