'''Atle Selberg''' is a Norwegian mathematician. He was born in Langesund, Norway, on 14th June, 1917. He studied mathematics at the University of Oslo and obtained his Ph.D in 1943. <ref>[http://www.spartacus.schoolnet.co.uk/USAselberg.htm Atle Selberg]</ref>
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'''Atle Selberg''' (14th June, 1917 - 6th August, 2007) was a [[Norway|Norwegian]] [[mathematics|mathematician]]. He was born in Langesund, Norway, and studied mathematics at the University of [[Oslo]], where he obtained his Ph.D in 1943. <ref>[http://www.spartacus.schoolnet.co.uk/USAselberg.htm Atle Selberg]</ref>
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In 1948 he provided a long-awaited elementary proof of the prime number theorem, around the same time that [[Paul Erdős]] provided an independent proof. He immigrated to the United States and works at the Institute for Advanced Study in [[Princeton University|Princeton]].
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In 1948 he provided a long-awaited elementary proof of the prime number theorem, around the same time that [[Paul Erdős]] gave an independent proof. He immigrated to the United States and works at the Institute for Advanced Study in [[Princeton University|Princeton]] where he died in 2007.
He introduced [[Spectral theory (mathematics)|spectral theory]] into number theory and developed the Selberg trace formula.
He introduced [[Spectral theory (mathematics)|spectral theory]] into number theory and developed the Selberg trace formula.