When a set is closed?

Related questions

1. What is entity in Object Oriented Programming?
2. What is a mirror question?
3. What is a research probe?
4. What are probing skills?
5. What does it mean to be bounded?
6. Is closed bounded?
7. Is 32dd a big bra size?
8. What is unbounded solution?
9. How do you define a bounded context?
10. What are triple D's?

Tags

1. #point
2. #disjoint
3. #therefore
4. #closed
5. #doesn
6. #points
7. #outside
8. #always
9. #every
10. #contains
11. #picked
12. #whatever
13. #isolated
14. #topological
15. #neighborhood
16. #limit
17. #touch
18. #definition
19. #which