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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.
unstrict inequality signs (less-than or equals to sign and greater-than or equals to sign) 1670 (with the horizontal bar over the inequality sign, rather than below it) John Wallis: 1734 (with double horizontal bar below the inequality sign) Pierre Bouguer
Bracket, Parenthesis, Greater-than sign, Less-than sign, Guillemet: Bracket ' ’ Apostrophe: Quotation mark, Guillemet, Prime, Grave: Quotation marks in English, Possessive * Asterisk: Asterism, Dagger: Footnote ⁂ Asterism: Dinkus, Therefore sign @ At sign \ Backslash: Slash, Solidus (/) ` Backtick (non-Unicode name) ('Backtick' is an alias ...
(the symbol may also indicate the domain and codomain of a function; see table of mathematical symbols). ⊃ {\displaystyle \supset } may mean the same as ⇒ {\displaystyle \Rightarrow } (the symbol may also mean superset ).
The word algorithm is derived from the Latinization of Al-Khwārizmī's name, Algoritmi, and the word algebra from the title of one of his works, Al-Kitāb al-mukhtaṣar fī hīsāb al-ğabr wa'l-muqābala (The Compendious Book on Calculation by Completion and Balancing).
Caduceus, a symbol of commerce, often erroneously used as a symbol of medicine. Camunian rose; Celtic cross; חַי Chai; ΧΡ Chi Rho; Christian symbolism. Christian cross / Christian cross variants; Conch shell; Coptic cross ☽ Crescent; Cross; Cross and Crown; Cross and flame; Cross of Sacrifice; Cross of St. Peter; Crucifix; Crux Gemmata
Various forms of the end-of-proof symbol In mathematics, the tombstone , halmos , end-of-proof , or Q.E.D. symbol "∎" (or " ") is a symbol used to denote the end of a proof , in place of the traditional abbreviation "Q.E.D." for the Latin phrase " quod erat demonstrandum ".