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653:. 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
281:
657:, 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.)
225:
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
649:(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
343:
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.
314:
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
879:
471:
426:
910:
337:, 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
512:
296:
Recorde published several works upon mathematical and medical subjects, chiefly in the form of dialogue between master and scholar, such as the following:
238:
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
720:
991:
1006:
888:
1001:
986:
725:
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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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222:
112:
17:
379:
334:
268:
239:
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Born around 1510, Robert
Recorde was the second and last son of Thomas and Rose Recorde of
148:
108:
8:
626:
304:, 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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789:(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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407:– a word to describe a number to the eighth power coined by Robert Recorde
234:, 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
340:
285:
179:
123:
729:. Vol. 22 (11th ed.). Cambridge University Press. p. 966.
687:
Early
English Poetry, Ballads, and Popular Literature of the Middle Ages
221:
there in 1531. Having adopted medicine as a profession, he went to the
427:"Notation, notation, notation: a brief history of mathematical symbols"
358:. Several books whose authors are unknown have been attributed to him:
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This article incorporates text from a publication now in the
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824:, The Mathematical Gazette Vol. 60 No. 411 March 1976 p 59-61
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199:
65:
787:
Robert Recorde: The Life and Times of a Tudor Mathematician
226:
afterwards went to London, and acted as physician to King
905:
Earliest Known Uses of Some of the Words of Mathematics
685:
John Hall, "An Historiall Expostulation", p. 60. In
472:"Robert Recorde: the Welshman who invented equality"
577:"Medicine and Mathematics in the Sixteenth Century"
27:
Welsh mathematician and inventor of the equals sign
877:Robert Recorde: the Welshman who invented equality
551:
505:
354:Most of those works were written in the form of a
785:Gareth Roberts and Fenny Smith, editors (2012).
953:
907:This contains numerous quotations from Recorde.
872:St. Andrew's University Maths History biography
837:Robert Recorde: Tudor Scholar and Mathematician
798:(Heidelberg, Springer) (History of Computing).
339:(London, 1557). This was the book in which the
178:physician and mathematician. He invented the
567:
565:
516:(online ed.). Oxford University Press.
306:(1543), the first English language book on
42:
919:Mathematical and Philosophical Dictionary
645:(London, England: John Kyngstone, 1557),
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562:
182:(=) and also introduced the pre-existing
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258:The first known equation, equivalent to
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217:about 1525, and was elected a Fellow of
924:Robert Recorde's life and works on h2g2
513:Oxford Dictionary of National Biography
458:Western Mail, Saturday 24 March 1928 -
190:(−) signs to English speakers in 1557.
14:
954:
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499:
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992:Alumni of the University of Cambridge
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424:
1007:Fellows of All Souls College, Oxford
900:Earliest Uses of Symbols of Relation
368:De Usu Globorum et de Statu temporum
494:
24:
1002:16th-century Welsh medical doctors
987:Alumni of the University of Oxford
689:, v. XI. London: T. Richards, 1844
25:
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895:100 Welsh Heroes – Robert Recorde
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322:(London, 1556) A book explaining
943:Works by or about Robert Recorde
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507:"Recorde, Robert (c. 1512–1558)"
390:History of mathematical notation
292:, "to avoid tedious repetition".
679:
625:Jourdain, Philip E. B. (1913).
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891:and other Welsh Mathematicians
672:, by Robert Recorde, 1548; at
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452:
418:
284:Recorde's introduction of the
246:, by the middle of June 1558.
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1:
1017:16th-century Welsh scientists
840:(University of Wales Press).
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425:Mazur, Joseph (21 May 2014).
350:(1548), frequently reprinted.
328:Copernican heliocentric model
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57:
745:Commentary on Robert Recorde
537:UK public library membership
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48:Robert Recorde (c.1512–1558)
7:
1042:16th-century mathematicians
373:
364:De Arte faciendi Horologium
140:Physician and mathematician
10:
1058:
1027:16th-century Welsh writers
1012:People imprisoned for debt
504:Johnston, Stephen (2004).
1032:16th-century male writers
1022:16th-century philosophers
754:The Nature of Mathematics
628:The Nature of Mathematics
550:Newman, James R. (1956).
266:in modern notation, from
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1037:British textbook writers
738:The World of Mathematics
554:The World of Mathematics
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395:St. Mary's Church, Tenby
882:6 February 2022 at the
834:Gordon Roberts (2016).
726:Encyclopædia Britannica
223:University of Cambridge
113:University of Cambridge
934:Works by Robert Record
792:Jack Williams (2011).
760:2013 Dover pbk reprint
643:The Whetstone of Witte
522:10.1093/ref:odnb/23241
335:The Whetstone of Witte
293:
290:The Whetstone of Witte
277:
269:The Whetstone of Witte
750:Philip E. B. Jourdain
668:The Urinal of Physick
360:Cosmographiae isagoge
348:The Urinal of Physick
326:while mentioning the
283:
264: + 15 = 71
257:
997:Welsh mathematicians
615:(here cited p. 131).
400:Welsh mathematicians
302:The Grounde of Artes
215:University of Oxford
213:Recorde entered the
149:University of Oxford
109:University of Oxford
573:Smith, David Eugene
324:Ptolemaic astronomy
272:. (The solution is
240:King's Bench Prison
982:Welsh philosophers
822:Is This a Recorde?
482:on 6 February 2022
476:The National Wales
294:
278:
172: 1510 – 1558
972:People from Tenby
938:Project Gutenberg
852:978-1-78316-854-5
810:978-0-85729-861-4
535:(Subscription or
219:All Souls College
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131:Scientific career
16:(Redirected from
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977:Welsh scientists
947:Internet Archive
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719:, ed. (1911). "
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843:pbk edition
801:pbk edition
341:equals sign
330:in passing.
286:equals sign
180:equals sign
97:Nationality
61: 1510
956:Categories
779:2006052118
697:References
539:required.)
527:26 January
486:6 February
236:Royal Mint
232:Queen Mary
153:Royal Mint
655:equations
651:equations
439:0261-3077
356:catechism
244:Southwark
228:Edward VI
194:Biography
81:June 1558
880:Archived
820:(1976).
752:(1913).
736:(1956).
611:33943138
593:12650954
385:Equation
380:Equality
374:See also
186:(+) and
174:) was a
945:at the
714::
602:7927718
308:algebra
230:and to
85:1558-07
83: (
72:, Wales
18:Recorde
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647:p. 236
609:
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137:Fields
740:Vol.
444:5 May
412:Notes
208:Wales
206:, in
200:Tenby
188:minus
176:Welsh
100:Welsh
66:Tenby
847:ISBN
805:ISBN
775:LCCN
765:ISBN
607:PMID
589:OCLC
529:2012
488:2022
446:2023
435:ISSN
366:and
184:plus
78:Died
54:Born
936:at
917:'s
913:in
826:doi
723:".
597:PMC
518:doi
288:in
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