Badge
| Revival | Answered more than 30 days later as first answer scoring 2 or more. This badge can be awarded multiple times. |
Apollo earned this badge 3 times |
jul 1 '11 at 12:13
Stone-Cech compactification problem
feb 9 '11 at 21:47
Alexandroff compactification question
feb 8 '11 at 19:17
Size of the closure of a set
