eja: remove a completed TODO and update an in-progress one.

[sage.d.git] / mjo / eja / TODO

diff --git a/mjo/eja/TODO b/mjo/eja/TODO
index 76b9eaf1dcf19f3c8385bd1f0486128b005ca3f2..87a162c73ab3ccf86623496dee39064e8b96bfb7 100644 (file)
--- a/mjo/eja/TODO
+++ b/mjo/eja/TODO
@@ -7,10 +7,12 @@
 4. Factor out the unit-norm basis (and operator symmetry) tests once
    all of the algebras pass.
 
-5. Override inner_product(), _max_test_case_size(), et cetera in
-   DirectSumEJA.
+5. Override random_instance(), one(), et cetera in DirectSumEJA.
 
 6. Switch to QQ in *all* algebras for _charpoly_coefficients().
+   This only works when we know that the basis can be rationalized...
+   which is the case at least for the concrete EJAs we provide,
+   but not in general.
 
 7. Pass already_echelonized (default: False) and echelon_basis
    (default: None) into the subalgebra constructor. The value of
@@ -18,3 +20,12 @@
    some time, and usinf e.g. FreeModule_submodule_with_basis_field
    we may somehow be able to pass the echelon basis straight in to
    save time.
+
+   This may require supporting "basis" as a list of basis vectors
+   (as opposed to superalgebra elements) in the subalgebra constructor.
+
+8. Implement random_instance() for general algebras as random_eja().
+   Copy/paste the "general" construction into the other classes that
+   can use it. The general construction can be something like "call
+   random_instance() on something that inherits me and return the
+   result."