Timeline for Coproduct on coordinate ring of finite algebraic group
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 13, 2012 at 16:09 | vote | accept | MathStudent | ||
| Feb 13, 2012 at 2:03 | comment | added | Keerthi Madapusi | What Mukai has written down here is the co-ordinate ring of the finite group scheme $\mu_n$ that parametrizes $n^\text{th}$-roots of unity. As people have noted below, this is the dual to the group scheme $\mathbb{Z}/n\mathbb{Z}$, whose co-ordinate ring will have the co-multiplication you describe. | |
| Feb 13, 2012 at 1:47 | answer | added | Rami | timeline score: 1 | |
| Feb 13, 2012 at 1:38 | answer | added | S. Carnahan♦ | timeline score: 3 | |
| Feb 13, 2012 at 1:28 | answer | added | Jim Humphreys | timeline score: 2 | |
| Feb 13, 2012 at 1:14 | answer | added | Florian Eisele | timeline score: 6 | |
| Feb 13, 2012 at 0:55 | history | asked | MathStudent | CC BY-SA 3.0 |