1 1. Add CartesianProductEJA.
3 2. Add references and start citing them.
5 3. Implement the octonion simple EJA.
7 4. Factor out the unit-norm basis (and operator symmetry) tests once
8 all of the algebras pass.
10 5. Override inner_product(), _max_test_case_size(), et cetera in
13 6. Switch to QQ in *all* algebras for _charpoly_coefficients().
15 7. Pass already_echelonized (default: False) and echelon_basis
16 (default: None) into the subalgebra constructor. The value of
17 already_echelonized can be passed to V.span_of_basis() to save
18 some time, and usinf e.g. FreeModule_submodule_with_basis_field
19 we may somehow be able to pass the echelon basis straight in to