Trained in math (PhD). Interested in science, technology, history. And math? Sometimes he uses these magic numbers 60Jxx, 31Cxx, 28Axx ...and who knows what else. On Citizendium he is interested in topics related to pages linked below.
PS. Feel free to use his other first name if you can pronounce it – for sure, you'll be asked for a detailed proof ;-)
- math recent changes