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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 ...
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.
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]
On 5 March 2020, Cornwell announced on social media that the 13th book, War Lord, would be the final novel in the series. [5] Following is a list of the novels with their UK publication years. The Last Kingdom (2004) The Pale Horseman (2005) The Lords of the North (2006) Sword Song (2007) The Burning Land (2009) Death of Kings (2011) The Pagan ...
Oughtred or Ughtred is an Anglo-Saxon English given name and surname. It means "son of Uhtred", being derived from the old English Ūhtrǣd composed of the elements uht "twilight, dusk" and ræd "advice". It may refer to the following people: Given name. Uhtred of Bamburgh (died 1016), Anglo-Saxon warlord
Henry Briggs (1 February 1561 – 26 January 1630) was an English mathematician notable for changing the original logarithms invented by John Napier into common (base 10) logarithms, which are sometimes known as Briggsian logarithms in his honour.
[6] [7] Several events in the series are based on events in the life of Uhtred the Bold, such as the siege of Bebbanburg by the Scots and the severed heads on poles; however, unlike many other characters in the book series who correspond closely to historical figures, such as Alfred the Great, Guthrum and King Guthred, the main character Uhtred ...
Al-Khwārizmī wrote several important books on the Hindu–Arabic numerals and on methods for solving equations. His book On the Calculation with Hindu Numerals (c. 825), along with the work of Al-Kindi, were instrumental in spreading Indian mathematics and numerals to the West. Al-Khwarizmi did not claim the numerals as Arabic, but over ...