Funny fact: a couple of my former classmates won gold/silver medals on the international mathematical olympiad. One minute googleing sais that at least 4 of the

Funny fact: a couple of my former classmates won gold/silver medals on the international mathematical olympiad. One minute googleing sais that at least 4 of them are teaching on US universities you mentioned. I am from eastern Europe. The US does have the richest mathematics knowledge in the world because the US can buy it.