Timeline for What is the "right" definition of the free abelian group on a set?
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Nov 23, 2009 at 0:20 | history | edited | Greg Stevenson | CC BY-SA 2.5 |
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| Nov 22, 2009 at 23:31 | comment | added | Qiaochu Yuan | Yes, I want an answer like "take the direct sum of |S| copies of Z," except in more categorical language. As for the other comment, I mean something much more elementary: I am trying to convince myself that chains are not the same thing as cochains. | |
| Nov 22, 2009 at 23:26 | history | answered | Greg Stevenson | CC BY-SA 2.5 |