Timeline for Degree one self-map of $\Bbb R^2\big\backslash \big\{(n,0):n\in \Bbb Z\big\}$ not homotopic to any self-homotopy equivalence
Current License: CC BY-SA 4.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 26, 2021 at 6:58 | comment | added | Someone | I can not accept both nice answers(similar). So, I decided to do this: for one case, one upvote but not ✔, and for another one, ✔ but not upvote. Sorry. | |
| Apr 26, 2021 at 6:13 | history | answered | Thomas Rot | CC BY-SA 4.0 |