In mathematics, "the" is not typically used directly with complex numbers. Complex numbers are typically represented using the symbol "i" to denote the imaginary unit, where i^2 = -1. Complex numbers are usually written in the form "a + bi", where "a" and "b" are real numbers and "bi" represents the imaginary part of the complex number. For example, in the complex number 3 + 2i, "" is the real part and "2i" is the imaginary part. So, while "the" can be used in discussions about complex numbers, it is not used directly in their representation or notation.