**Oskar Perron** was a German mathematician best known for the Perron paradox:

Suppose the largest natural number is *N*. Then if *N* > 1 we have *N*^{2} > *N* contradicting the definition. Hence (!) *N* = 1.

*Find out more at*: https://mathshistory.st-andrews.ac.uk/Biographies/Perron/