Timeline for Attaching an ideal whose square is zero: does this operation have a name and a notation?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 17, 2016 at 13:16 | vote | accept | chizhek | ||
| May 17, 2016 at 13:16 | comment | added | chizhek | @Jeremy Rickard - Thanks. I googled "trivial extension algebra" and found some references which, however, all consider only special instances of the construction described in the question. Whatever, I got what I asked for: the construction is no longer nameles and I have a sensible notation for it. About the notation, borrowed from semidirect products of groups: this is more than just a distant analogy, see the continuation of my question. | |
| May 16, 2016 at 21:00 | comment | added | Dag Oskar Madsen | The notation $A \ltimes N$ is often used. | |
| May 16, 2016 at 18:00 | history | answered | Jeremy Rickard | CC BY-SA 3.0 |