More Sets
The following sets are defined using predicates:|
Complex =
|
{ x + yi | x, y ∈ Reals } | complex numbers, i = √ - 1 |
|
[α , β
] =
|
{x ∈ Reals | α ≤ x ≤ β } | closed interval |
|
(α , β
] =
|
{x ∈ Reals | α < x ≤ β } | half-open, half-closed interval |
|
(α , β
) =
|
{x ∈ Reals | α < x< β } | open interval |