Chords symbols for Function Theory (Riemann)

[Music Teacher]

Hello,

I would like to know if there is a way (i search quite a while
whithout success) to write chords according to Riemann's Function
Theory. In principle, math would do the trick, but there are some
arguments for a own syntax (have a look at
<http://de.wikipedia.org/wiki/Datei:FunktionsAnalyseBach.PNG>)

Thanks in advance

Francois