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William Oughtred (5 March 1574 – 30 June 1660), [1] also Owtred, Uhtred, etc., was an English mathematician and Anglican clergyman. [2] [3] [4] After John Napier discovered logarithms and Edmund Gunter created the logarithmic scales (lines, or rules) upon which slide rules are based, Oughtred was the first to use two such scales sliding by one another to perform direct multiplication and ...
His earliest published work Grammelogia was dedicated to Charles I.It was attacked in William Oughtred's Circles of Proportion (1631), on grounds of plagiarism: Oughtred had taught Delamaine, and considered that the work simply reproduced his mathematical instruments without any serious understanding of the theory on which they depended. [1]
When he was 58, Cornwell met his birth father, William Outhred (or Oughtred), for the first time while on a book tour in Vancouver, Canada. [2] There was a family tree going back to the 6th century. [2]
In the winter of 1013, Æthelred was forced into exile in Normandy. After London had finally submitted to him, Sweyn was accepted as king by Christmas 1013; however, he reigned for only five weeks. He died at, or near, Gainsborough on 2 February 1014. At Sweyn's death, Æthelred was able to return from exile and resume his reign.
William Jones, FRS (1675 – 1 July 1749 [1]) was a Welsh mathematician best known for his use of the symbol π (the Greek letter Pi) to represent the ratio of the circumference of a circle to its diameter.
Clavis mathematicae (English: The Key of Mathematics) is a mathematics book written by William Oughtred, originally published in 1631 in Latin.It was an attempt to communicate the contemporary mathematical practices, and the European history of mathematics, into a concise and digestible form.
Thomas listed among his brothers He was the youngest of five brothers: John (died 1642), married Anne Dowdall, daughter of Elizabeth Dowdall [4]; William (died 1627), was killed at the Siege of Saint-Martin-de-Ré.
In 1631 Oughtred introduced the multiplication sign (×), his proportionality sign (∷), and abbreviations 'sin' and 'cos' for the sine and cosine functions. [57] Albert Girard also used the abbreviations 'sin', 'cos', and 'tan' for the trigonometric functions in his treatise.