|
Complex =
|
{ x + yi | x, y Î Reals } | complex numbers, i = Ö - 1 |
|
[a , b
] =
|
{x Î Reals | a £ x £ b } | closed interval |
|
(a , b
] =
|
{x Î Reals | a < x £ b } | half-open, half-closed interval |
|
(a , b
) =
|
{x Î Reals | a < x< b } | open interval |