To tell you first, we specialized in the basic course of mathematical analysis (three semesters), advanced algebra (two semesters), analytic geometry, and later learned probability theory, mathematical statistics and ordinary differential equations. The above five courses are all very basic. Compulsory courses for mathematics majors include complex variable function, real variable function, partial differential equation, abstract algebra, optimization theory, numerical analysis, functional analysis and so on. Just learn the first five math basics well ~

Several textbooks:

Mathematical Analysis (2nd Edition) edited by Chen, Department of Mathematics, Fudan University, Higher Education Press.

Workbook:

Tutoring, Guidance and Examination of Mathematical Analysis (Fudan Second Edition) Li Chengjia and Hu Zhu Northwestern Polytechnical University Press

Analysis of Classical Exercises of Mathematical Analysis Sun Tao Higher Education Press

Textbook: A Course of Probability Theory and Mathematical Statistics, edited by Wei Zongshu and others, Higher Education Press (the content is detailed, it is best to get the answer, only online).

Textbook: Ordinary Differential Equations (3rd Edition) Wang Gaoxiong Higher Education Press.

Tutoring: Contents, Methods and Skills of Ordinary Differential Equations Sun Jinlan Sun Hao Huazhong University of Science and Technology Press (others will do).