The quotient ring $F_2[x,y]/(x,y)^2$ for the field $F_2$ of two elements.
Notes: Lattice of proper ideals is the diamond lattice. All ideals principal except for maximal ideal.
Keywords quotient ring
| Name | Measure | |
|---|---|---|
| cardinality | 8 | |
| composition length | left: 3 | right: 3 | 
| Krull dimension (classical) | 0 | 
| Name | Description | 
|---|---|
| Idempotents | $\{0,1\}$ | 
| Jacobson radical | Elements of "even weight" | 
| Left singular ideal | Elements of "even weight" | 
| Left socle | Elements of "even weight" | 
| Nilpotents | Elements of "even weight" | 
| Right singular ideal | Elements of "even weight" | 
| Right socle | Elements of "even weight" | 
| Unique maximal ideal | Elements of "even weight" | 
| Units | Elements of "odd weight." | 
| Zero divisors | Elements of "even weight" |