Timeline for indecomposable modules restricted from $gl_n$ to $sl_n$
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 11, 2016 at 10:59 | vote | accept | Gary | ||
| Mar 11, 2016 at 7:01 | comment | added | Gary | Thank you so much. Actually, this is a question someone asked me. And I thought it is so obviously that I told him I would give him an answer in a short time. But now 2 days past, I didn't prove it until you show up. Today I can go to see her. Thanks a lot. Actually, I am considering that the similar question comes out naturally for a more general setting. Let A be a finite dimensional algebra over $k$, B is a sub algebra. Then can we find a condition for B such that all indecomposable (finite dimensional ) module for A is still indecomposable (finite dimensional ) module when restricted to B? | |
| Mar 10, 2016 at 17:10 | history | answered | Jim Humphreys | CC BY-SA 3.0 |