Definition:Addition/Complex Numbers

Definition
The addition operation in the domain of complex numbers $\C$ is written $+$.

Let $z = a + i b, w = c + i d$ where $a, b, c, d \in \R, i^2 = -1$.

Then $z + w$ is defined as:
 * $\paren {a + i b} + \paren {c + i d} = \paren {a + c} + i \paren {b + d}$

Complex Addition
When the formal definition of complex numbers is used, complex addition is defined thus:

Also see

 * Complex Addition is Commutative
 * Complex Addition is Associative


 * Identity Element of Addition on Numbers
 * Inverse Elements for Addition on Numbers


 * Definition:Complex Multiplication