Talk:Parallel Spectral Numerical Methods/The Klein-Gordon Equation

I find this article very poorly written.

- the introduction is incomplete. The notations are incompatible with the notation in the Klein-Gordon entry of wikipedia.

- The Python examples are not properly annotated and made no attempt to relate to the discussion in the text. - The Python 2d example for time scheme 2) and 3) appear to be identical (seem to be implementing example 3).