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 13215

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

0 votes

Does Morita theory hint higher modules for noncommutative ring?

As explained for example here https://doi.org/10.1112/plms/s3-72.2.281 the most direct analogue of Morita equivalence for (connected) graded algebras actually boils down to graded isomorphism. However …
Jan Grabowski's user avatar
17 votes
3 answers
1k views

Isomorphisms of quantum planes

Let $k$ be a field and $q\in k^{*}$. The quantum plane $k_{q}[x,y]$ is the algebra $k\langle x,y\rangle/\langle xy=qyx \rangle$ (i.e. the quotient of the free non-commutative $k$-algebra on two varia …