Complex conjugate
OPERATION ON COMPLEX NUMBERS IN WHICH THE SIGN OF THE REAL PART IS KEPT BUT THE SIGN OF THE IMAGINARY PART IS REVERSED
Complex conjugation; Complex conjugacy; Conjugate complex; Complex Conjugate; Conjugate pair
In mathematics, the complex conjugate of a complex number is the number with an equal real part and an imaginary part equal in magnitude but opposite in sign. That is, (if a and b are real, then) the complex conjugate of a + bi is equal to a - bi.