The mathematics book recommendations were as follows: 1 A Little Book of Math: This is a very popular mathematics book written by the famous mathematician Peter COWVER. The book introduced some basic mathematical concepts and techniques suitable for beginners and intermediate readers. 2 The Art of Math: This is a popular mathematics book written by the famous mathematician Walter Sheldon. It covers a variety of mathematics topics including algebra, geometry, and calculus. This book is suitable for math enthusiasts and professionals. 3 Mathematics Analysis: This was a mathematical analysis textbook written by the famous mathematician John WANICE. It introduced the basic concepts and techniques of mathematical branches such as real analysis, complex analysis, and topography. This book is suitable for math enthusiasts and professionals. These three books were all excellent mathematics books that could be chosen according to one's interests and needs.