Non-orthogonality
- When the basis set (gm(x)) is mutually orthogonal, it can be shown that the
coefficients of the representation (Fm) can be found with inner product techniques.
- The set of Gaussian derivatives at one location is mutually orthogonal.
- A set which includes Gaussian derivatives at multiple locations is, however, non-orthogonal.
- The coefficients of this transform cannot be found by inner product techniques.
