eja: add TODON'T use Cramer's rule.

diff --git a/mjo/eja/TODO b/mjo/eja/TODO
index b8ceda8fa3defcb3df1a5641ab03eed28c910ee9..38aa85bfe7a5c5ecc4b97c880c05533e42b5ad69 100644 (file)
--- a/mjo/eja/TODO
+++ b/mjo/eja/TODO
@@ -17,3 +17,6 @@ B. Add support for a symmetric positive-definite bilinear form in
 6. Can we make the minimal and characteristic polynomial tests work
    for trivial algebras, too? Then we wouldn't need the "nontrivial"
    argument to random_eja().
+
+7. Solve the charpoly system with A_of_x.solve_right(x_powers[r])
+   rather than dumbass Cramer's rule.