Welsh mathematician and inventor of the equals sign
Robert Recorde
Robert Recorde (c.1512–1558)
Born
c. 1510
Tenby, Pembrokeshire, Wales
Died
June 1558 (1558-07)
London, England
Nationality
Welsh
Alma mater
University of Oxford University of Cambridge
Known for
Inventing the equals sign (=)
Scientific career
Fields
Physician and mathematician
Institutions
University of Oxford Royal Mint
Robert Recorde (c. 1510 – 1558) was a Welsh[1][2] physician and mathematician. He invented the equals sign (=) and also introduced the pre-existing plus (+) and minus (−) signs to English speakers in 1557.
^Mazur, Joseph (21 May 2014). "Notation, notation, notation: a brief history of mathematical symbols". The Guardian. ISSN 0261-3077. Retrieved 5 May 2023.
^Western Mail, Saturday 24 March 1928 - https://www.britishnewspaperarchive.co.uk/viewer/bl/0000104/19280324/188/0006
RobertRecorde (c. 1510 – 1558) was a Welsh physician and mathematician. He invented the equals sign (=) and also introduced the pre-existing plus (+)...
mathematician RobertRecorde in The Whetstone of Witte (1557). The original form of the symbol was much wider than the present form. In his book Recorde explains...
"=" symbol, which appears in every equation, was invented in 1557 by RobertRecorde, who considered that nothing could be more equal than parallel straight...
words rather than as superscript numbers. This term was suggested by RobertRecorde, a 16th-century Welsh physician, mathematician and writer of popular...
Guidobaldo del Monte John Napier Pedro Nunes William Oughtred Luca Pacioli RobertRecorde Niccolò Fontana Tartaglia Ludovico Ariosto Martin Bauzer Luís de Camões...
The Whetstone of Witte is the shortened title of RobertRecorde's mathematics book published in 1557, the full title being The whetstone of witte, whiche...
the modern sense is attested in a 1518 book by Henricus Grammateus. RobertRecorde, the designer of the equals sign, introduced plus and minus to Britain...
Gerolamo Cardano (earliest founder of probability and binomial expansion); RobertRecorde (physician) and François Viète (lawyer). As time passed, many mathematicians...
complex numbers. 1556: Niccolò Tartaglia introduces parenthesis. 1557: RobertRecorde introduces the equal sign. 1564: Gerolamo Cardano is the first to produce...
1502 Rhys Nanmor - Elegy on the death of Arthur, Prince of Wales 1540 RobertRecorde - The Grounde of Artes 1542 Andrew Boorde - Fyrst Boke of the Introduction...
RobertRecorde's Arithmetic: or, The Ground of Arts was one of the first printed English textbooks on arithmetic and the most popular of its time. The...
the 18-hole Tenby Golf Course that provides links golf by the coast. RobertRecorde (ca.1512 – 1558), an Anglo-Welsh physician and mathematician. Sir William...
predecessors had used Regiomontanus' Table of the Stars. In England, RobertRecorde, John Dee, Thomas Digges and William Gilbert were among those who adopted...
universe. It is often cited as the beginning of the Scientific Revolution. RobertRecorde publishes The Grounde of Artes, teaching the Worke and Practise of Arithmeticke...
list of inventions and discoveries made in Wales or by Welsh people. RobertRecorde (c. 1512 – 1558) was a Welsh physician and mathematician. He invented...
Niccolò Tartaglia used parentheses for precedence grouping. In 1557 RobertRecorde published The Whetstone of Witte which introduced the equal sign (=)...
doi:10.1007/978-1-349-05230-1_2. Jack Williams (19 November 2011). RobertRecorde: Tudor Polymath, Expositor and Practitioner of Computation. Springer...
(62 votes) Gerald of Wales, (1146–1223) bishop and writer (60 votes) RobertRecorde, (1512–1558) mathematician (57 votes) David Edward Hughes, (1831–1900)...
or "mute"). Gerard of Cremona (c. 1150), Fibonacci (1202), and then RobertRecorde (1551) all used the term to refer to unresolved irrational roots, that...
mathematics textbooks to be written in English and French were published by RobertRecorde, beginning with The Grounde of Artes in 1543. However, there are many...
1823. Electron and isotopes discovered – J. J. Thomson Equals sign RobertRecorde Erbium-doped fibre amplifier - Sir David N. Payne Faraday cage – Michael...
be memorized and carried out by rote. Indeed, the rule as given by RobertRecorde in his Ground of Artes (c. 1542) is: Gesse at this woorke as happe doth...
gunpowder or slow matches. His book acknowledged mathematicians such as RobertRecorde and Marcus Jordanus as well as earlier military writers on artillery...
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