1, mathematical basis, which includes basic concepts and theories of mathematics, such as algebra, geometry, calculus, etc. These books cover the core knowledge of mathematics and are the basis of learning mathematics.

2. Probability statistics. This category includes books on probability, statistics and data analysis, which can help readers understand random variables, data models, sampling techniques and hypothesis testing.

3. Applied mathematics. This category includes the concrete application of mathematics in application fields, such as physics, engineering, finance and so on. These books are designed to help readers apply mathematical knowledge to practical problems.

4. Mathematics education. This category includes mathematics education of different ages, including basic education, university mathematics education and mathematics teacher training. These books aim to provide resources related to mathematics education, such as textbooks, teaching plans and teaching methods.

5. History of mathematics. This category includes the historical development, important figures and milestones of mathematics. These books can help readers understand the evolution of mathematics and its influence on the world.