Real number: rational number, natural number, 0, positive number, true fraction, false fraction, infinite cyclic decimal, integer, negative number, irrational number and infinite cyclic decimal;

Imaginary number: common factor, common multiple, prime number, prime number, composite number, logarithm and reciprocal.

Mathematics is a discipline that studies the concepts of quantity, structure, change, space and information, and belongs to a formal science from a certain point of view. Mathematicians and philosophers have a series of views on the exact scope and definition of mathematics. In the development of human history and social life, mathematics also plays an irreplaceable role, and it is also an indispensable basic tool for studying and studying modern science and technology.