- sage: Lu = u.matrix()
- sage: Ly = y.matrix()
- sage: Lz = z.matrix()
- sage: Lzy = (z*y).matrix()
- sage: Luy = (u*y).matrix()
- sage: Luz = (u*z).matrix()
- sage: Luyz = (u*(y*z)).matrix()
+ sage: Lu = u.operator_matrix()
+ sage: Ly = y.operator_matrix()
+ sage: Lz = z.operator_matrix()
+ sage: Lzy = (z*y).operator_matrix()
+ sage: Luy = (u*y).operator_matrix()
+ sage: Luz = (u*z).operator_matrix()
+ sage: Luyz = (u*(y*z)).operator_matrix()