Complexes

Complexes represents the domain of complex numbers, as in x∈Complexes.

Examples

Specify that a variable is complex:

Element[z, Complexes]
(* z ∈ Complexes *)

Solve over the complex numbers:

Solve[x^2 + 1 == 0, x, Complexes]
(* {{x -> -I}, {x -> I}} *)

Please visit the official Wolfram Language Reference for more details.