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Francois Viète and the Foundations of Algebra

Francois Viète and the Foundations of Algebra

Harald Sack
On February 23, 1603, French mathematician François Viète passed away. Viète‘s work on a  algebra was an important step towards modern algebra, due to its innovative use of letters as parameters in equations. He was a lawyer by trade, and served as a privy councillor to both Henry III and Henry IV. Francois Viète – Early Years Vieta was born at Fontenay-le-Comte, in western France about 50 km east of the coastal town of…
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mathematics
Giambattista della Porta – Natural Magic and the Academy of Secrets

Giambattista della Porta – Natural Magic and the Academy of Secrets

Harald Sack
On February 4, 1615, Italian scholar, polymath and playwright Giambattista della Porta passed away. Besides occult philosophy, astrology, alchemy, mathematics, meteorology, and natural philosophy, della Porta worked on cryptography and also on optics. He claimed to be the inventor of the telescope although he does not appear to have constructed one before Galileo [4]. “Having observed the forces of all things natural and celestial and having examined by painstaking investigation the sympathy among…
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mathematics
William Friedman and the Art of Cryptology

William Friedman and the Art of Cryptology

Harald Sack
On September 24, 1894, US cryptologist William F. Friedman was born. He is considered one of the world’s greatest cryptologists, who helped decipher enemy codes from World War I to World War II. William Friedman – Early Years Friedman was born as Wolfe Frederick Friedman, then part of imperial Russia, now Chisinau, capital of Moldova, as the son of Frederick Friedman, a Jew from Bucharest who worked as a translator and linguist for the Russian Postal Service,…
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history
The Secrets of the mysterious Voynich Manuscript

The Secrets of the mysterious Voynich Manuscript

Tabea Tietz
In 1912, Polish-born antiquarian and bibliophile Wilfrid Voynich bought a mysterious illustrated codex hand-written in an unknown writing system that may have been composed in Northern Italy during the Italian Renaissance. The eponymous Voynich manuscript has been studied by many professional and amateur cryptographers, but no one has yet succeeded in deciphering the text. Therefore, it has become a famous case in the history of cryptography. A Strange Manuscript The manuscript counts about…
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philosophy
The Art of Hiding Information – Johannes Trithemius’ Steganography

The Art of Hiding Information – Johannes Trithemius’ Steganography

Harald Sack
On February 1, 1462, German Benedictine abbot and polymath Johannes Trithemius was born. Trithemius was active in the German Renaissance as a lexicographer, chronicler, cryptographer, and occultist. He had considerable influence on the development of early modern cryptography and modern occultism. However,  “Speak of things public to the public, but of things lofty and secret only to the loftiest and most private of your friends. Hay to the ox and sugar to…
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computer science
Churchill’s Best Horse in the Barn – Alan Turing, Codebreaker and AI Pioneer

Churchill’s Best Horse in the Barn – Alan Turing, Codebreaker and AI Pioneer

Tabea Tietz
On June 23, 1912, English computer scientist, mathematician, logician, and cryptanalyst,Alan Mathison Turing was born. Outside the world of computer science or mathematics the name of probably the most influential figure and in some sense the father of all computing technology Alan Turing is hardly known. But it was him, who laid the foundations of the theory of computing. Already in the 1930s, when no digital electronic computer had ever been built,…
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