Of course, there are many branches of mathematics, such as probability and mathematical statistics, linear algebra, analytic geometry, discrete mathematics, complex variable function, Riemannian geometry, extension and complement set, and relatively new fuzzy mathematics (fuzzy mathematics is the basis of intelligent computers) ... Of course, there are many more, but my knowledge space is limited, and I only dabble in this respect, which can only help you. (In addition, the mathematical and physical equations are actually the solutions of partial differential equations (groups). It is only a simple application of mathematics in physics, and I don't think it should be regarded as a classification of mathematics.