meta user
network profile
| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 5 months |
| seen | Dec 10 '12 at 18:05 | |
| stats | profile views | 6 |
|
Dec 10 |
comment |
Inner automorphism of a group-ring When $ u = \sum_{g \in G} r_g g $ then $ \text{supp}(u) = \{ g \in G | r_g \neq 0 \} $. |
|
Dec 9 |
asked | Inner automorphism of a group-ring |
|
Dec 9 |
comment |
Two normal subgroups with trivial intersection, one is characteristic, what about the other? Thank you Dan. I understand it now. |
|
Dec 5 |
comment |
Two normal subgroups with trivial intersection, one is characteristic, what about the other? I'm sorry, but I don't see why $\mathbb{Z} \times 0_{\mathbb{Z}_2}$ is not characteristic. Could you help me? |
|
Dec 5 |
awarded | Student |
|
Dec 5 |
comment |
Two normal subgroups with trivial intersection, one is characteristic, what about the other? Because the statement would be a lot stronger if that wasn't needed. |
|
Dec 5 |
asked | Two normal subgroups with trivial intersection, one is characteristic, what about the other? |
