The original meaning refers to playing games, Go and gambling.
In modern mathematics, there is game theory, also known as "game theory" and "game theory", which belongs to a branch of applied mathematics. It means that when there is interaction between multiple decision-making subjects, each subject makes a favorable decision according to his own information and ability. At present, it is widely used in biology, economics, international relations, computer science, political science, military strategy and many other disciplines. Game theory mainly studies the interaction between formulaic incentive structures. It is a mathematical theory and method to study phenomena with the nature of struggle or competition, and it is also an important topic in operational research.