**Atle Selberg** (1917-2007) was a Norwegian mathematican who won the Fields Medal in 1950.

Selberg proved that a positive proportion of the zeroes of the Riemann zeta function lie on the critical strip $\Re (s) = 1/2$. He also found an elementary proof of the **prime number theorem**, which states that if $\pi(x)$ is the number of primes in the interval $[0,x]$, then ${\displaystyle \lim_{x \rightarrow \infty} \frac{ \pi(x)}{x / \ln(x)} = 1}$.

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- Last edited by Jeroen Sijsling on 2015-08-01 22:20:20

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