- Arne Beurling
Arne Carl-August Beurling (
February 3 ,1905 -November 20 ,1986 ) was amathematician andprofessor ofmathematics atUppsala University (1937-1954) and later at theInstitute for Advanced Study at Princeton, USA.Arne Beurling worked extensively in
harmonic analysis ,complex analysis andpotential theory .In 1940 he single-handedly deciphered and reverse-engineered an early version of the
Siemens and Halske T52 also known as the "Geheimfernschreiber" (one of the "Fish cyphers ") used byNazi Germany , and created a device that enabledSweden to decipher Germanteleprinter traffic passing through Sweden fromNorway on a cable. In this way, Swedish authorities knew aboutOperation Barbarossa before it occurred. This became the foundation for theSwedish National Defence Radio Establishment ("FRA"). (The cypher in the Geheimfernschreiber is generally considered to be more complex than the cypher used in the Enigma machines.Fact|date=June 2008)Arne Beurling's great-grandfather was
Per Henric Beurling (1758 (or 1763) - 1806), who founded a high quality clock factory in Stockholm in 1783.References
*Bengt Beckman. "Codebreakers: Arne Beurling and the Swedish crypto program during World War II." Translated by Kjell-Ove Widman. Providence, RI: American Mathematical Society, c2002.
External links
* [http://frode.home.cern.ch/frode/ulfving/ulfving.html Arne Beurling and the success of Swedish Signal Intelligence]
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