Arne Beurling
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Arne Carl-August Beurling (February 3, 1905 - November 20, 1986) was a mathematician and professor of mathematics at Uppsala University (1937-1954) and later at the Institute for Advanced Study at Princeton, USA.
Arne Beurling worked extensively in harmonic analysis, complex analysis and potential 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 by Nazi Germany, and created a device that enabled Sweden to decipher German teleprinter traffic passing through Sweden from Norway on a cable. In this way, Swedish authorities knew about Operation Barbarossa before it occurred. This became the foundation for the Swedish 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.)
Arne Beurling's great-grandfather was Per Henric Beurling (1758 (or 1763) - 1806), who founded a high quality clock factory in Stockholm in 1783.
[edit] External links
- Arne Beurling and the success of Swedish Signal Intelligence
- O'Connor, John J., and Edmund F. Robertson. "Arne Beurling". MacTutor History of Mathematics archive.fr:Arne Beurling
