Ernst Sejersted Selmer (20 February 1920 – 8 November 2006) was a Norwegian mathematician, who worked on number theory. He also worked as a cryptologist during the second world war.
He was born in Oslo as a son of Ernst W. Selmer. He took the dr.philos. degree in 1952, and was hired as a lecturer at the University of Oslo in the same year. From 1956 to 1987 he was a professor at the University of Bergen. His main work came within diophantine equations.[1]
He was a member of the Norwegian Academy of Science and Letters.[2]
The Selmer group of an Abelian variety is named after him.
On September 25, 1953 he applied for a U.S. Patent for an Electronic Adder. This patent, No. 2,947,479, was awarded on August 2, 1960.[3]