sage: e0*[[[[]]]]
[[[[]]]]*e0
-6. Can we convert the complex/quaternion algebras to avoid real-
- (un)embeddings? Quaternions would need their own
- QuaternionMatrixAlgebra, since Sage matrices have to have entries
- in a commutative ring.
-
7. Every once in a long while, the test
sage: set_random_seed()