Timeline for Fundamental group of the line with the double origin.
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 18, 2017 at 6:55 | comment | added | Ronnie Brown | See also Grothendieck's comment quoted (in translation) in mathoverflow.net/questions/220561/…. | |
| May 21, 2010 at 17:36 | comment | added | Tyler Lawson | I think the issue is not being Hausdorff, but that the "standard" version of the Seifert-Van Kampen theorem requires connected intersection. | |
| May 21, 2010 at 15:12 | history | answered | coudy | CC BY-SA 2.5 |