George Polya (1887 - 1985) taught from 1914 to 1940 at ETH Zürich
and from 1940 to 1953 at Stanford University. He found and proved many theorems
and wrote many books. Source: Wikipedia.
The lecture he gave here shows also a great talent in teaching. We looked at that problem in our
June 22, 2020 lecture: in how many parts can one maximally divide space with 4 planes?
One can learn a lot about problem solving techniques from this problem.
