Imaginary numbers were once seen as impossible, but they became essential tools in solving real mathematical problems.

A general solution to the cubic equation was long considered impossible, until we gave up the requirement that math reflect reality.

DURHAM, N.C. – Computer engineers at Duke University have demonstrated that using complex numbers—numbers with both real and imaginary components—can play an integral part in securing ...

He was inspired by a remarkable way of representing two-dimensional rotations. The trick was to use what are called “complex numbers”, which have a “real” part and an “imaginary” part.