Neumann is definitely the last true polymath, and in my opinion the greatest scientist of the 20th century. Coincidentally, I named my new PC at the university

Neumann is definitely the last true polymath, and in my opinion the greatest scientist of the 20th century. Coincidentally, I named my new PC at the university "vneumann" yesterday. Don't forget Gauss - he has more contributions than any you've listed, and contributed to a vast number of fields. His 'known for' section is a separate Wikipedia page ;)