Timeline for exact short sequence of divisible groups splits? [closed]
Current License: CC BY-SA 3.0
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Mar 13, 2018 at 22:37 | comment | added | YCor | Since you used the ac tag, the keyword is "injective module". So, one half is the notion and basic properties of injective modules. The second half is that a divisible module over a PID is injective. Nothing very specific to abelian groups (i.e. modules over the specific ring $\mathbf{Z}$). | |
Mar 13, 2018 at 21:52 | history | edited | Tomasz Kania |
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Mar 13, 2018 at 21:51 | history | closed |
David Handelman abx Gerald Edgar Dietrich Burde Tomasz Kania |
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Mar 13, 2018 at 21:50 | answer | added | Tomasz Kania | timeline score: 2 | |
Mar 13, 2018 at 21:18 | review | Close votes | |||
Mar 13, 2018 at 21:54 | |||||
Mar 13, 2018 at 21:16 | history | edited | user350168 |
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Mar 13, 2018 at 21:14 | comment | added | Joe Silverman | This has nothing to do with algebraic geometry or linear algebra (although it may have applications in those areas), so it was not a good idea to add those tags. The commutative algebra tag that you started with was quite appropriate. Further, this looks more like a homework problem than it does a research problem, so it would probably be more suitable on MathStackExchange. | |
Mar 13, 2018 at 21:08 | history | edited | user350168 |
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Mar 13, 2018 at 21:01 | history | asked | user350168 | CC BY-SA 3.0 |