Ramanudžanov dokaz Bertranovog postulata

Aleksander Simonič

The well-known Bertrand postulate, that for each positive integer $n\ge4$ there exists a prime $p$, greater than $n$ and smaller than $2n-2$, has been proved in several ways. One of the most inspiring ones is Ramanujan's proof form 1919. In the present paper, this proof is being recalled, in a way that can be presented to high school students.