Timeline for Is the union of a compact and the relatively compact components of its complementary in a manifold compact?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Apr 28, 2022 at 17:10 | vote | accept | Saúl RM | ||
| Dec 9, 2021 at 4:20 | answer | added | Aitor Iribar Lopez | timeline score: 3 | |
| Dec 5, 2021 at 18:09 | history | became hot network question | |||
| Dec 5, 2021 at 16:08 | vote | accept | Saúl RM | ||
| S Apr 28, 2022 at 17:10 | |||||
| Dec 5, 2021 at 15:39 | answer | added | Pierre PC | timeline score: 4 | |
| Dec 5, 2021 at 12:05 | comment | added | Jochen Wengenroth | I doubt that this is true. There are simple examples which fail to be manifolds, e.g., $X= [0,1]\times \{0\} \cup \{0\}\times [0,\infty) \cup \bigcup_{n\in\mathbb N} \{1/n\}\times [0,n]$ and $K=[0,1]\times [0,1]$. Perhaps one can make such a comb a manifold in higher dimensions. | |
| Dec 5, 2021 at 10:09 | history | asked | Saúl RM | CC BY-SA 4.0 |