-7. If we factor out a "matrix algebra" class, then it would make sense
- to replace the custom embedding/unembedding functions with static
- _real_embedding() and _real_unembedding() methods.
+5. Compute the scalar in the general natural_inner_product() for
+ matrices, so no overrides are necessary.
+
+6. The main EJA element constructor is happy to convert between
+ e.g. HadamardEJA(3) and JordanSpinEJA(3).
+
+7. Figure out if CombinatorialFreeModule's use of IndexedGenerators
+ can be used to replace the matrix_basis().
+
+8. Move the "field" argument to a keyword after basis, jp, and ip.
+
+9. Add back the check_field=False and check_axioms=False parameters
+ for the EJAs we've constructed ourselves. We can probably pass
+ the value of "check_axioms" to <whatever>.span_of_basis() to skip
+ the linear-independence check.