Timeline for cofibrations in $O_G$-spaces
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 20, 2012 at 23:09 | comment | added | sen-deba | @David: yes; some other useful criterion to check for a map to be cofibration. | |
| Jan 19, 2012 at 1:56 | answer | added | Peter May | timeline score: 3 | |
| Jan 19, 2012 at 1:11 | comment | added | Tom Goodwillie | You can give generating cofibrations, starting with the usual generating cofibrations $S^{n−1}\to D^n$ for $Top$ and applying to these the functors $Top\to Top^{O^{op}_G}$ that are left adjoint to the evaluation functors at the various objects. Calling these the cells, then a cofibration is any retract of a cellular inclusion. | |
| Jan 18, 2012 at 23:39 | comment | added | David White | I guess you mean, other than by lifting? | |
| Jan 18, 2012 at 23:14 | history | asked | sen-deba | CC BY-SA 3.0 |