eja: add another performance TODO.

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

diff --git a/mjo/eja/TODO b/mjo/eja/TODO
index 1407ebdbe83bafab1ef79d881d25d2cf4912e18e..feaf98ac872145accaa4788419dddd325fde917b 100644 (file)
--- a/mjo/eja/TODO
+++ b/mjo/eja/TODO
@@ -1,7 +1,4 @@
-1. Finish CartesianProductEJA: add to_matrix(), random_instance(),...
-   methods. I guess we should create a separate class hierarchy for
-   Cartesian products of RationalBasisEJA? That way we get fast
-   charpoly and random_instance() defined...
+1. Add cartesian products to random_eja().
 
 2. Add references and start citing them.
 
@@ -17,3 +14,16 @@ sage: a0 = (1/4)*X[4]**2*X[6]**2 - (1/2)*X[2]*X[5]*X[6]**2 - (1/2)*X[3]*X[4]*X[6
 5. Profile the construction of "large" matrix algebras (like the
    15-dimensional QuaternionHermitianAlgebra(3)) to find out why
    they're so slow.
+
+6. We should compute whether or not the algebra is associative if it
+   is unknown. I guess the "associative" argument should be ternary
+   (True, False, None)? We should also figure out the correct
+   True/False values for the example classes, and of course add an
+   _is_associative() method.
+
+7. When field=RDF, subalgebra construction is failing because the
+   inner product isn't associative? Actually, it's the combination
+   of field=RDF and orthonormalize=True.
+
+8. Set check_axioms=False for element-subalgebras outside of once or
+   twice in the test suite.