X-Git-Url: https://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=mjo%2Feja%2FTODO;h=985e50a8dbbfc2d6f8c8d2e80d445fcd9b3ccd86;hb=0430a8642776e71ef0c26ab5e186f5a98a5a7433;hp=e576af22e155bd21edc97b934a024dcf844ce356;hpb=d728cb9284177a5108fbf3e83128b60444d405a8;p=sage.d.git

diff --git a/mjo/eja/TODO b/mjo/eja/TODO
index e576af2..bb2b7f3 100644
--- a/mjo/eja/TODO
+++ b/mjo/eja/TODO
@@ -1,7 +1,17 @@
-1. Add CartesianProductEJA.
+1. Add references and start citing them.
 
-2. Check the axioms in the constructor when check != False?
+2. Profile (and fix?) any remaining slow operations.
 
-3. Add references and start citing them.
+3. When we take a Cartesian product involving a trivial algebra, we
+   could easily cache the identity and charpoly coefficients using
+   the nontrivial factor. On the other hand, it's nice that we can
+   test out some alternate code paths...
 
-4. Implement the octonion simple EJA.
+4. Can we hit "x" with the deortho matrix and delegate to the
+   _rational_algebra to speed up minimal_polynomial?
+
+5. In CartesianProductEJA we already know the multiplication table and
+   inner product matrix. Refactor things until it's no longer
+   necessary to duplicate that work.
+
+6. Eliminate the matrix_space() override in CartesianProductEJA.