Matrices usually appeared in abstract works such as science fiction and fantasy novels as a mathematical symbol used to represent logical operations and data structures. In abstract works, matrices were often used to represent mathematical operations such as addition, multiplication, and logical operations. For example, in a matrix, a number represents an operation. For example,"+1" represents the addition operation "!" "-" and "/" represented logical operations and inverse operations, respectively. Matrices could also be used to represent physical quantities in the physical world such as energy, mass, and speed. In abstract works, matrices could be used to represent operations between physical quantities, such as addition and deduction between energy and mass. Matrix represented logical operations and data structures in abstract works. It was an important mathematical symbol.