$2 \times 2$ ring of upper triangular matrices over the field of two elements.
Keywords matrix ring
| Name | Measure | |
|---|---|---|
| cardinality | 8 | |
| composition length | left: 3 | right: 3 |
| global dimension | left: 1 | right: 1 |
| Krull dimension (classical) | 0 |
| Name | Description |
|---|---|
| Left singular ideal | $\{0\}$ |
| Right singular ideal | $\{0\}$ |