The 17 best universities in the world to study math

Source: https://www.businessinsider.com/the-17-best-universities-in-the-world-to-study-math-2018-7/?IR=T/#17-kyoto-university-japan-2189-1

According to the above source, the best 17 universities to study Math are:

Princeton, United States
University of Paris-Sud, France
Stanford University, United States
Oxford University, United Kingdom
New York University, United States.
6-17 are listed in the website.

The above ranking is a little strange, Cambridge (7th) and Harvard (12th) are both outside the top 5. Most typical rankings will have these 2 universities in the top 10.The ranking “looked at factors including how many Field Medalists had studied at each institution”.