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642:. I will propounde a fewe examples, bicause the extraction of their rootes, maie the more aptly bee wroughte. And to avoide the tediouse repetition of these woordes: is equalle to: I will sette as I doe often in worke use, a paire of paralleles, or Gemowe lines of one lengthe, thus: = , bicause noe .2. thynges, can be moare equalle." (However, for easy manipulation of
270:
646:, I will present a few examples in order that the extraction of roots may be more readily done. And to avoid the tedious repetition of these words "is equal to", I will substitute, as I often do when working, a pair of parallels or twin lines of the same length, thus: = , because no two things can be more equal.)
214:
to take the degree of M.D. in 1545. He afterwards returned to Oxford, where he publicly taught mathematics, as he had done prior to going to
Cambridge. He invented the "equals" sign, which consists of two horizontal parallel lines, stating that no two things can be more equal. It appears that he
638:(although the pages of this book are not numbered). From the chapter titled "The rule of equation, commonly called Algebers Rule" (p. 236): "Howbeit, for easie alteration of
332:
was introduced within a printed edition. With the publication of this book
Recorde is credited with introducing algebra into the Island of Britain with a systematic notation.
303:
The
Pathway to Knowledge, containing the First Principles of Geometry ... bothe for the use of Instrumentes Geometricall and Astronomicall, and also for Projection of Plattes
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460:
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326:, whiche is the seconde parte of Arithmeteke: containing thextraction of rootes; the cossike practise, with the rule of equation; and the workes of Surde Nombers
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990:
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Recorde published several works upon mathematical and medical subjects, chiefly in the form of dialogue between master and scholar, such as the following:
227:
and served as
Comptroller of Mines and Monies in Ireland. After being sued for defamation by a political enemy, he was arrested for debt and died in the
709:
1005:
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1015:
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849:
Frank J. Swetz and Victor J. Katz (2011). "Mathematical
Treasures - Robert Recorde's Whetstone of Witte," Convergence (January 2011)
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The Castle of
Knowledge, containing the Explication of the Sphere both Celestiall and Materiall, etc.
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Born around 1510, Robert
Recorde was the second and last son of Thomas and Rose Recorde of
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615:
293:, teachings the Worke and Practise, of Arithmeticke, both in whole numbers and fractions
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Current publisher of Robert
Recorde's books in the form of original reproductions
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778:(University of Wales Press, distributed by University of Chicago Press) 232 pages
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https://www.britishnewspaperarchive.co.uk/viewer/bl/0000104/19280324/188/0006
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396:– a word to describe a number to the eighth power coined by Robert Recorde
223:, to whom some of his books are dedicated. He was also controller of the
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Robert
Recorde: Tudor Polymath, Expositor and Practitioner of Computation
373:
718:. Vol. 22 (11th ed.). Cambridge University Press. p. 966.
676:
Early
English Poetry, Ballads, and Popular Literature of the Middle Ages
210:
there in 1531. Having adopted medicine as a profession, he went to the
416:"Notation, notation, notation: a brief history of mathematical symbols"
347:. Several books whose authors are unknown have been attributed to him:
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296:
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This article incorporates text from a publication now in the
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54:
813:, The Mathematical Gazette Vol. 60 No. 411 March 1976 p 59-61
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Robert Recorde: The Life and Times of a Tudor Mathematician
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afterwards went to London, and acted as physician to King
894:
Earliest Known Uses of Some of the Words of Mathematics
674:
John Hall, "An Historiall Expostulation", p. 60. In
461:"Robert Recorde: the Welshman who invented equality"
566:"Medicine and Mathematics in the Sixteenth Century"
133:
125:
107:
93:
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42:
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Welsh mathematician and inventor of the equals sign
866:Robert Recorde: the Welshman who invented equality
540:
494:
343:Most of those works were written in the form of a
774:Gareth Roberts and Fenny Smith, editors (2012).
896:This contains numerous quotations from Recorde.
861:St. Andrew's University Maths History biography
826:Robert Recorde: Tudor Scholar and Mathematician
787:(Heidelberg, Springer) (History of Computing).
328:(London, 1557). This was the book in which the
167:physician and mathematician. He invented the
8:
556:
554:
505:(online ed.). Oxford University Press.
295:(1543), the first English language book on
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20:
908:Mathematical and Philosophical Dictionary
634:(London, England: John Kyngstone, 1557),
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171:(=) and also introduced the pre-existing
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247:The first known equation, equivalent to
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206:about 1525, and was elected a Fellow of
913:Robert Recorde's life and works on h2g2
502:Oxford Dictionary of National Biography
447:Western Mail, Saturday 24 March 1928 -
406:
179:(−) signs to English speakers in 1557.
488:
486:
981:Alumni of the University of Cambridge
7:
996:Fellows of All Souls College, Oxford
889:Earliest Uses of Symbols of Relation
357:De Usu Globorum et de Statu temporum
991:16th-century Welsh medical doctors
976:Alumni of the University of Oxford
678:, v. XI. London: T. Richards, 1844
14:
884:100 Welsh Heroes – Robert Recorde
311:(London, 1556) A book explaining
932:Works by or about Robert Recorde
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496:"Recorde, Robert (c. 1512–1558)"
379:History of mathematical notation
281:, "to avoid tedious repetition".
614:Jourdain, Philip E. B. (1913).
880:and other Welsh Mathematicians
661:, by Robert Recorde, 1548; at
273:Recorde's introduction of the
235:, by the middle of June 1558.
1:
1006:16th-century Welsh scientists
829:(University of Wales Press).
414:Mazur, Joseph (21 May 2014).
339:(1548), frequently reprinted.
317:Copernican heliocentric model
157:
46:
734:Commentary on Robert Recorde
526:UK public library membership
37:Robert Recorde (c.1512–1558)
1031:16th-century mathematicians
353:De Arte faciendi Horologium
129:Physician and mathematician
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1016:16th-century Welsh writers
1001:People imprisoned for debt
493:Johnston, Stephen (2004).
1021:16th-century male writers
1011:16th-century philosophers
743:The Nature of Mathematics
617:The Nature of Mathematics
539:Newman, James R. (1956).
255:in modern notation, from
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118:
30:
1026:British textbook writers
727:The World of Mathematics
543:The World of Mathematics
384:St. Mary's Church, Tenby
871:6 February 2022 at the
823:Gordon Roberts (2016).
715:Encyclopædia Britannica
212:University of Cambridge
102:University of Cambridge
923:Works by Robert Record
781:Jack Williams (2011).
749:2013 Dover pbk reprint
632:The Whetstone of Witte
511:10.1093/ref:odnb/23241
324:The Whetstone of Witte
282:
279:The Whetstone of Witte
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258:The Whetstone of Witte
739:Philip E. B. Jourdain
657:The Urinal of Physick
349:Cosmographiae isagoge
337:The Urinal of Physick
315:while mentioning the
272:
253: + 15 = 71
246:
986:Welsh mathematicians
604:(here cited p. 131).
389:Welsh mathematicians
291:The Grounde of Artes
204:University of Oxford
202:Recorde entered the
138:University of Oxford
98:University of Oxford
562:Smith, David Eugene
313:Ptolemaic astronomy
261:. (The solution is
229:King's Bench Prison
971:Welsh philosophers
811:Is This a Recorde?
471:on 6 February 2022
465:The National Wales
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267:
161: 1510 – 1558
961:People from Tenby
927:Project Gutenberg
841:978-1-78316-854-5
799:978-0-85729-861-4
524:(Subscription or
208:All Souls College
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120:Scientific career
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708:, ed. (1911). "
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330:equals sign
319:in passing.
275:equals sign
169:equals sign
86:Nationality
50: 1510
945:Categories
768:2006052118
686:References
528:required.)
516:26 January
475:6 February
225:Royal Mint
221:Queen Mary
142:Royal Mint
644:equations
640:equations
428:0261-3077
345:catechism
233:Southwark
217:Edward VI
183:Biography
70:June 1558
869:Archived
809:(1976).
741:(1913).
725:(1956).
600:33943138
582:12650954
374:Equation
369:Equality
363:See also
175:(+) and
163:) was a
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591:7927718
297:algebra
219:and to
74:1558-07
72: (
61:, Wales
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636:p. 236
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126:Fields
729:Vol.
433:5 May
401:Notes
197:Wales
195:, in
189:Tenby
177:minus
165:Welsh
89:Welsh
55:Tenby
836:ISBN
794:ISBN
764:LCCN
754:ISBN
596:PMID
578:OCLC
518:2012
477:2022
435:2023
424:ISSN
355:and
173:plus
67:Died
43:Born
925:at
906:'s
902:in
815:doi
712:".
586:PMC
507:doi
277:in
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
