Timeline for Covering maps on Euclidean spaces and spheres [closed]
Current License: CC BY-SA 2.5
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 21, 2013 at 14:30 | history | closed |
Ricardo Andrade Andrey Rekalo Olivier Benoist Stefan Kohl♦ Daniel Moskovich |
Not suitable for this site | |
| Dec 21, 2013 at 1:57 | review | Close votes | |||
| Dec 21, 2013 at 14:30 | |||||
| Mar 18, 2010 at 14:47 | comment | added | Regenbogen | This question was best asked at the "Ask a topologist" forum. | |
| Mar 16, 2010 at 17:17 | answer | added | Anton Geraschenko | timeline score: 4 | |
| Mar 16, 2010 at 16:59 | comment | added | Kim Morrison | There's always the disconnected cover by two copies of the base. | |
| Mar 16, 2010 at 16:05 | comment | added | Andrea Ferretti | Is this homework? | |
| Mar 16, 2010 at 15:05 | comment | added | Andrew Stacey | "covering map" implies local diffeomorphism which means that this is a strictly weaker question than that one as it assume strictly stronger conditions. | |
| Mar 16, 2010 at 15:00 | comment | added | Gerald Edgar | What about a related question (which I think was also asked in MO once...) Does there exist a continuous f : R^n -> R^n that is exactly two-to-one ? | |
| Mar 16, 2010 at 14:21 | comment | added | Pete L. Clark | No on $\mathbb{R}^n$ for all $n$ and $S^n$ for $n \geq 2$: these spaces are simply connected. Yes for $S^1$: $z \mapsto z^2$. | |
| Mar 16, 2010 at 14:13 | history | asked | Julgyz Harzum | CC BY-SA 2.5 |