# Category Analysis

## Fekete’s Lemma and an application on Ramsey theory

Fekete’s lemma was proved by Pólya and Szegő. A historical note, not related to Fekete’s lemma thought, which I did not know myself before reading the biography of Szegő and I find it for some reason interesting to know: At the age of 15, the young John von Neumann, recognised as a mathematical prodigy, was […]