$\left\{a+bi+cj+dk \in \mathbb{H} \mid a,b,c,d \in \mathbb{Z} \right\}$
Notes: Not a maximal order in the rational quaternions.
Keywords quaternion algebra subring
| Name | Measure | |
|---|---|---|
| cardinality | $\aleph_0$ | |
| composition length | left: $\infty$ | right: $\infty$ | 
| Name | Description | 
|---|---|
| Idempotents | $\{0,1\}$ | 
| Jacobson radical | $\{0\}$ | 
| Left singular ideal | $\{0\}$ | 
| Left socle | $\{0\}$ | 
| Nilpotents | $\{0\}$ | 
| Right singular ideal | $\{0\}$ | 
| Right socle | $\{0\}$ | 
| Units | $\{\pm 1,\pm i, \pm j, \pm k\}$ | 
| Zero divisors | $\{0\}$ |