Timeline for Increasing union of contractible CW complexes
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 4, 2011 at 21:54 | comment | added | Martin Brandenburg | So for short: $\pi_n$ commutes with increasing unions in consideration and detect contractibility by Whitehead. | |
| Oct 4, 2011 at 21:01 | vote | accept | Mate | ||
| Oct 4, 2011 at 21:00 | vote | accept | Mate | ||
| Oct 4, 2011 at 21:00 | |||||
| Oct 4, 2011 at 20:42 | comment | added | Igor Rivin | Saying "Whitehead's theorem" is almost as misleading (I believe Henry had proved at least two reasonably well-known results). | |
| Oct 4, 2011 at 18:13 | comment | added | Mariano Suárez-Álvarez | Calling Whitehead's theorem a standard lemma is a slight understating :) | |
| Oct 4, 2011 at 17:51 | history | answered | Neil Strickland | CC BY-SA 3.0 |