- South St. Paul is a city in Dakota County, Minnesota, United States, immediately south and southeast of St. Paul and east of West St. Paul. The population was 20,759 at the 2020 census. The town was a major meat-packing location, and many residents are descended from immigrants of Southern European and Eastern European heritage, who came to work in the meat-packing plants in the early twentieth century.
- How the Square Root of 2 Became a Number (quantamagazine.org)
The ancient Greeks wanted to believe that the universe could be described in its entirety using only whole numbers and the ratios between them — fractions, or what we now call rational numbers. But this aspiration was undermined when they considered a square with sides of length 1, only to find that the length of its diagonal couldn’t possibly be written as a fraction.