Timeline for Is a subgroup of a free abelian group free abelian?
Current License: CC BY-SA 2.5
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 10, 2023 at 16:03 | comment | added | Alex Grounds | I've upvoted this because it is now the first Google hit for "subgroup of free abelian group is free" | |
| Jan 27, 2019 at 17:25 | review | Close votes | |||
| Jan 28, 2019 at 9:38 | |||||
| Jan 27, 2019 at 17:13 | comment | added | YCor | More generally every submodule of a free module over a PID is free. | |
| Nov 10, 2009 at 19:24 | answer | added | Danny Calegari | timeline score: 25 | |
| Oct 30, 2009 at 5:43 | vote | accept | Anton Geraschenko | ||
| Oct 30, 2009 at 5:43 | comment | added | Anton Geraschenko | @JSE: So it is. | |
| Oct 30, 2009 at 5:41 | comment | added | JSE | I've downvoted this, not because it's a bad question, but because it's answered by the first Google hit for "free abelian group." | |
| Oct 30, 2009 at 5:25 | answer | added | Alon Amit | timeline score: 12 | |
| Oct 30, 2009 at 5:21 | history | asked | Anton Geraschenko | CC BY-SA 2.5 |