- #1
Garcher
- 1
- 0
Homework Statement
How to define closed,, open and compact sets?Are they bounded or not?
Homework Equations
For example {x,y:1<x<2}
The Attempt at a Solution
It's is opened as all points are inner
Can you please say the rule for defining the type of the set? Like for example 1<=(x^2+y^2)<=2?