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De Lagny died on 11 April 1734. While he was dying, someone asked him: "What is the square of 12?" and he answered immediately: "144."
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Analyse générale ou Méthodes nouvelles pour résoudre les probémes de tous les genres et de tous degrés à l’infini
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De la cubature de la sphére où l’on démontr une infinité de portions de sphére égales à des pyramides rectilignes
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Méthode nouvelle infiniment générale et infiniment abrégée pour l’extraction des racines quarrées, cubiques...
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for arctangent, but only 112 decimals were correct. This remained the record until 1789, when
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Méthodes nouvelles et abrégées pour l’extraction et l’approximation des racines
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Nouveaux élémens d’arithmétique et d’algébre ou introduction aux mathématiques
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between 1716 and 1718. On 7 July 1719, he was awarded a pension by the
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Thomas Fantet de Lagny was son of Pierre Fantet, a royal official in
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when, on 11 December 1695, he was named an associate of the
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367:Lagny, Thomas Fantet de, Encyclopedia.com
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253:in 1714, and became a librarian at the
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391:General Biographical Dictionary
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386:"Lagny, Thomas Fantet De"
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361:University of St Andrews
351:"Thomas Fantet de Lagny"
149:Thomas Fantet de Lagny
23:Thomas Fantet de Lagny
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249:De Lagny returned to
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212:In 1686, he went to
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382:Chalmers, Alexander
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255:Bibliothèque du roi
224:under the name of
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66:11 April 1734
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395:. Retrieved
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123:Institutions
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68:(1734-04-11)
424:1734 deaths
419:1660 births
276:Computing π
240:hydrography
187:mathematics
176:Montpellier
117:Mathematics
85:Nationality
413:Categories
397:11 January
339:References
290:Jurij Vega
44:1660-11-07
244:Rochefort
166:Biography
226:de Lagny
218:Noailles
207:Toulouse
201:text by
172:Grenoble
199:algebra
197:and an
191:Euclid
153:French
113:Fields
89:French
78:France
56:France
251:Paris
214:Paris
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399:2021
232:Lyon
183:Lyon
63:Died
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