$R=\begin{bmatrix}\mathbb C&\mathbb H\\0&\mathbb H\end{bmatrix}$
Keywords triangular ring
| Name | Measure | |
|---|---|---|
| cardinality | $\mathfrak c$ | |
| composition length | left: 4 | right: 3 |
| Krull dimension (classical) | 0 |
| Name | Description |
|---|---|
| Left singular ideal | $\{0\}$ |
| Right singular ideal | $\{0\}$ |