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Topic: Ludolph van Ceulen

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	Ludolph van Ceulen
		Der Artikel Ludolph van Ceulen gehört zur Kategorie: Mathematiker (16.
		Van Ceulens Werke wurden erst nach seinem Tode von seinem Schüler Willebrord Snell in Latein übersetzt.
		Er ist noch heute berühmt durch die auf 35 Dezimalstellen genaue Berechnung der Kreiszahl [Formel], den ersten Fortschritt nach der Berechnung auf 16 Stellen durch den persischen Mathematiker Jamshid Masud Al-Kashi um 1430.
	www.weblexikon.de /Ludolph_van_Ceulen.html (701 words)

	Pi in de Pieterskerk
		De aanleiding hiertoe, tevens het feestelijk hoogtepunt van de dag, vormde de onthulling van een gedenksteen voor de wiskundige/schermmeester Ludolph van Ceulen.
		Aan het eind van de 16de en in het begin van de 17de eeuw heeft deze veel werk verricht aan het vinden van nauwkeurige benaderingen voor het getal pi.
		De Pi-dag bestond uit een middag- en een avondgedeelte; voor beide is het programma hier te vinden.
	www.math.rug.nl /~top/pi-dag/6juli.html (304 words)

	Ludolph van Ceulen - Wikipedia, the free encyclopedia
		Ludolph van Ceulen (28 January 1540–31 December 1610) was a German mathematician.
		Ludolph van Ceulen spent a major part of his life calculating the numerical value of the mathematical constant π, using essentially the same methods as those employed by Archimedes some two thousand years earlier.
		He published a 20-decimal value in his 1596 book Van den Circkel ("On the Circle"), later expanding this to 35 decimals.
	en.wikipedia.org /wiki/Ludolph_van_Ceulen (180 words)

	The Galileo Project
		Van Ceulen computed pi to 20 decimal places, and later, using Archimedes method (to which he added devices to speed things up) to 33 and ultimately to 35 places.
		Van Ceulen formed friendships with powerful figures in the intellectual and scientific community of the Netherlands, including Jan Cornets de Groot, Stevin, and Adrien Van Roomen.
		In the late 80's there was a lively exchange of pamphlets in the Netherlands on the value of pi--which involved, in addition to van Ceulen, Simon van der Eycke, Coignet, Stevin, and others.
	galileo.rice.edu /Catalog/NewFiles/ceulen.html (373 words)

	Mathematician Biography (Site not responding. Last check: )
		Ludolph van Ceulen was born in Germany on January 28 1540.
		During his child hood Van Ceulen had to move to the Netherlands because of the Catholic Inquisitions.
		Van Ceulen spent the majority of his life working on this number and never finished it (neither has any else to this day).
	academies.culver.org /nctm04/alg1xs03/garrisc/biograph.htm (172 words)

	Wiskundemeisjes » Geschiedenis
		Hoe bereken je de lengte van de diagonaal van een vierkant als de lengte van de zijde bekend is? Op het onderstaande kleitablet (YBC 7289) kun je de vraag en oplossing zien als de zijde lengte 30 heeft.
		Jan Hogendijk onderstreept het belang van het gebruik van dit soort echte bronnen in het onderwijs.
		De wiskunde is na 1600 enorm gegroeid: van een wetenschap van getal en ruimte werd ze de wetenschap van structuren in het algemeen.
	www.wiskundemeisjes.nl /category/geschiedenis (2463 words)

	Nederlandse Wiskunde in de 17e eeuw
		Bos, Henk J. [Bos 2000] "De cirkel gedeeld, de omtrek becijferd en pi gebeiteld: Ludolph van Ceulen en de uitdaging van de wiskunde".
		[Descartes 1659] Proeven der wysbegeerte of redenering van de middel om de reden wel te beleiden, en de waarheit in de wetenschappen te zoeken; de verregezichtkunde, verhevelingen, en meetkunst.
		[Romein en Romein 1977] Erflaters van onze beschaving, Amsterdam: Querido, 1977, twaalfde druk.
	www.math.uu.nl /wiskonst/literatuur.html (740 words)

	Math Forum - Ask Dr. Math (Site not responding. Last check: )
		Ludolph van Ceulen and Pi Date: 11/02/98 at 02:19:09 From: Ryan Hammond Subject: Ludolph van Ceulen and pi Dear Dr. Math, For a class I was asked to find out about a certain mathematican.
		I'm looking for information on Ludolph van Ceulen.
		Ludolph van Ceulen doubled the number of sides from 2^2 to 2^3, to 2^4, and repeated this step 60 times.
	mathforum.org /library/drmath/view/52555.html (473 words)

	Van_Ceulen biography
		Ludolph Van Ceulen does not appear to have had a university education as his parents were not sufficiently wealthy to pay for one.
		Van Ceulen is famed for his calculation of π to 35 places which he did using polygons with 2
		In particular his friendships with Simon Stevin and Adriaan Van Roomen were important for van Ceulen's career.
	www-history.mcs.st-and.ac.uk /history/Biographies/Van_Ceulen.html (229 words)

	Van_Ceulen (Site not responding. Last check: )
		Ludolph Van Ceulen does not appear to have had a university education as his parents were not sufficiently wealthy to pay for one.
		Van Ceulen had several friends among the mathematicians of the time.
		Snell translated two of Van Ceulen's books into Latin to make them more accessible to the world-wide mathematical community.
	www.educ.fc.ul.pt /icm/icm2003/icm14/Van_Ceulen.htm (184 words)

	Ludolph van Ceulen \| THG Lexikon (Site not responding. Last check: )
		Die Lehrer an der Ingenieurschule hatten ein geringes Ansehen an der Universität da sie oft aus der Praxis kamen und z.B. wie van Ceulen keine Universitätsausbildung hatten.
		Van Ceulens Werke wurden erst nach seinem Tode von seinem Schüler Willebrord Snell in Latein übersetzt.
		Ten laetsten van Interest, met alderhande tafelen daer toe dienende, met het ghebruyck, door veel constighe exempelen gheleerdt,...
	www.thgweb.de /lexikon/Ludolph_van_Ceulen (551 words)

	Ludolph Van Ceulen info here at en.85of100c.info (Site not responding. Last check: )
		Daffodils come in all areas from 5-inch Ludolph van Ceulen on 2-foot stems to half-inch anthers on 2-inch proveniences.
		Along with the presages of Ludolph van Ceulen, There are also daffodil cultivars in mid and late Ludolph van Ceulen schisms.
		Ludolph van Ceulen prostrate a goodly smithereen of energy calculating the numerical monetary goodness of the mathematical unbroken Ï, using essentially the allied integrates as those promised by Archimedes some two hundred earlier.
	en.85of100c.info /Ludolph_van_Ceulen (271 words)

	The Quiz Page Weekly Quiz 100 - Gopal's Homepage
		Ludolph Von Ceulen's last wish was to have something engraved on his tombstone and the wish was fulfilled.
		His number "P" (later called Ludolph's number) was engraved in his tombstone.It was engraved because he determined it.
		Neelakantan E. His Answer: 3.14159265358979323846264338327950288....funda this is known as ludolph's number....he calculated the value of 1/4 for 35 decimals....
	members.tripod.com /gopalhome/quizweek100.html (198 words)

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