1 In high school, the complex number is the largest known. There is a set containing complex numbers in advanced mathematics, but the operations on this set lack the commutative law (that is, ab≠ba), that is, the set must be expanded at the expense of the algorithm.

Please refer to the first floor for the definitions of imaginary and complex numbers.

By the way, refute the second floor's point of view, transcendental number is a real number, defined as a real number that cannot be written as the root of any polynomial.