This section describes in some detail specialized themes that I have pursued in my research over the years. They are listed in alphabetical order in the vertical bar to the left.
For each theme, I give a brief assessment of my research: it includes a summary of what I have published and, at the same time, a self-evaluation in relationship to ongoing research in the field.
This section is in the nature of work in progress, and I will introduce new items as the occasion presents itself.