Viggo Brun

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Viggo Brun (October 13, 1882 - August 15, 1978) was a Norwegian mathematician. He was born in Lier and died in Drøbak.

His best known contribution is that he showed that the sum of reciprocals of twin primes converges to a finite value, now called Brun's constant. He proved that by means of devising an improvement over Legendre's version the sieve of Eratosthenes, now known as the Brun sieve. Because of this, he is widely considered one of the founders of modern sieve theory.

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pl:Viggo Brun he:ויגו ברון ja:ヴィーゴ・ブルン