eja: add a TODO for the morning.

diff --git a/mjo/eja/TODO b/mjo/eja/TODO
index 310e3073c667fb42b7591c0b8a989f590455e4fa..39daf2a796c0d9d21c21057ae0899dacf4fbed89 100644 (file)
--- a/mjo/eja/TODO
+++ b/mjo/eja/TODO
@@ -36,3 +36,7 @@ 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
        sage: x.is_invertible() == (x.det() != 0)
 
    in eja_element.py returns False.
+
+8. The definition of product_on_basis() and the element constructor
+   for MatrixAlgebra are totally wrong. There's no reason to expect
+   a product of monomials to again be plus/minus a monomial.