It is generally believed that advanced mathematics is a basic subject formed by calculus, more in-depth algebra, geometry and the intersection between them. The main contents include: limits, calculus, space analytic geometry and vector algebra, series, and ordinary differential equations. Higher mathematics has its inherent characteristics, which are high degree of abstraction, strict logic and wide application. Abstraction and computation are the most basic and significant features of mathematics. Only with a high degree of abstraction and unity can we deeply reveal its essential laws and make it more widely used.
