Timeline for Common zero of invariants of finite groups
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 5, 2016 at 20:33 | vote | accept | CommunityBot | ||
| Jan 5, 2016 at 20:21 | answer | added | Gregor Kemper | timeline score: 3 | |
| Jan 2, 2016 at 15:13 | comment | added | Venkataramana | Atiyah Mcdonald (commutative algebra) have a section on finite integral extension a | |
| Jan 2, 2016 at 14:27 | comment | added | user6671 | Thanks! Do you have a reference where I could read this up and fill in the details of the proof you just gave? | |
| Jan 2, 2016 at 14:24 | comment | added | Venkataramana | yes, it is true. You can extend a maximal ideal in the ring of invariants to a maximal ideal in the whole polynomial ring. Otherwise, the polynomial span of the smaller maximal ideal generates the unit ideal (nullstellensatz) , and by taking invariants under the finite group you get that the maximal ideal contains $1$. This argument holds for any finite integral extension | |
| Jan 2, 2016 at 14:16 | history | edited | user6671 | CC BY-SA 3.0 |
added 286 characters in body
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| Jan 2, 2016 at 14:08 | history | asked | user6671 | CC BY-SA 3.0 |