Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 26522

Non-commutative rings and algebras, non-associative algebras. Can be used in combination with ra.rings-and-algebras

14 votes

Units in a group algebra

If $k$ has characteristic $p$ and $G$ is a finite $p$-group, then the augmentation ideal $J$ of $kG$ is nilpotent and of codimension one, hence coincides with the Jacobson radical. This means that the …
Vesselin Dimitrov's user avatar