Brian Mere's Digital Garden
Closed (Toplogical)
Closed (Toplogical)
A set
F
⊂
R
is
closed
if it contains its
Limit Point
s.
Closure
A
⊂
R
The
closure
of
A
is:
A
―
=
A
∪
{
x
|
x
is a limit point of
A
}