Timeline for Homomorphisms and indecomposable decompositions of finite modules over polynomial rings [closed]
Current License: CC BY-SA 4.0
8 events
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| Nov 2, 2020 at 7:27 | history | closed |
Jeremy Rickard user44191 Ilya Bogdanov Leo Alonso Neil Strickland |
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| Oct 24, 2020 at 20:55 | comment | added | SCM | Thank you Igor. I thought I had seen a statement of this nature before, but couldn't find it written anywhere so I wanted to be sure I had the details right; I'm glad I asked, as I didn't know it was a more general statement! | |
| Oct 24, 2020 at 19:03 | comment | added | Igor Khavkine | This is true for any finite direct sum presentations of $M$ and $N$, irrespective of whether the summands are indecomposable or not. Essentially, direct sum decompositions mean that any homomorphism $\phi$ can be represented by a block matrix of the homomorphisms $\phi_{ij}$. | |
| Oct 24, 2020 at 17:33 | history | edited | YCor | CC BY-SA 4.0 |
removed capitals from title
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| Oct 24, 2020 at 17:25 | history | edited | YCor | CC BY-SA 4.0 |
removed tag, formatting
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| Oct 24, 2020 at 17:16 | review | Close votes | |||
| Nov 2, 2020 at 7:27 | |||||
| Oct 24, 2020 at 16:43 | review | First posts | |||
| Oct 24, 2020 at 17:00 | |||||
| Oct 24, 2020 at 16:39 | history | asked | SCM | CC BY-SA 4.0 |