Top journals. The American Mathematical Yearbook is the world's top periodical in the field of mathematics. For decades, there have been few articles on mainland mathematics, and the first author has hardly published them. Xi Nanhua is the first person. Mathematical Yearbook is one of the most authoritative journals in the field of international mathematics, and ranks as the top four mathematical journals in the world along with Journal of American Mathematical Society, Journal of Mathematics and New Progress in Mathematics.