The subring of $R_{15}$ generated by the diagonal copy of $\mathbb Q$ and the subset of matrices with finitely many nonzero entries.
Keywords infinite matrix ring subring
| Name | Measure | |
|---|---|---|
| weak global dimension | 0 |
| Name | Description |
|---|---|
| Jacobson radical | $\{0\}$ |
| Left singular ideal | $\{0\}$ |
| Right singular ideal | $\{0\}$ |