1. Ludolph Van Ceulen Store Ludolph van Ceulen Listing of 39 Ludolph van Ceulen items available for purchase at our online store. Click here for Ludolph van Ceulen and Ludolph van Ceulen related products. Ludolph van Ceulen Store. Buy Ludolph van Ceulen books and other Mathematician Biographies products online! Choose from 39 Ludolph van Ceulen items in-stock as of 10-5-2003 http://www.mathbook.com/bio/c/Ludolph_van_Ceulen

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2. Van_Ceulen Ludolph van Ceulen. Ludolph Van Ceulen does not appear to have had a universityeducation as his parents were not sufficiently wealthy to pay for one. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Van_Ceulen.html

Ludolph van Ceulen Born: 28 Jan 1540 in Hildesheim, Germany Died: 31 Dec 1610 in Leiden, Netherlands Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Ludolph Van Ceulen does not appear to have had a university education as his parents were not sufficiently wealthy to pay for one. He held a number of posts not only as a teacher of mathematics but also as a fencing teacher. He taught fencing and mathematics in Delft, then in 1594, opened a fencing school in Leiden. In 1600 he was appointed to the Engineering School in Leiden. For the last ten years of his life he taught arithmetic, surveying and fortification in the engineering school. Van Ceulen is famed for his calculation of p to 35 places which he did using polygons with 2 sides. He spent most of his life doing this and it is fitting that the 35 places of p are engraved on his tombstone. In Germany p was called the Ludolphine number for a long time. Van Ceulen had several friends among the mathematicians of the time. In particular his friendships with Simon

3. Poster Of Van_Ceulen Ludolph Van Ceulen died 394 years ago 31st December 1610. Ludolph VanCeulen is famed for his calculation of to 35 places. In Germany http://www-gap.dcs.st-and.ac.uk/~history/Posters/1231.html

Ludolph Van Ceulen died 394 years ago 31st December 1610 Ludolph Van Ceulen is famed for his calculation of to 35 places. In Germany used to be called the Ludolphine number Find out more at http://www-history.mcs.st-andrews.ac.uk/history/

4. Ludolph Van Ceulen - Encyclopedia Article About Ludolph Van Ceulen. Free Access, encyclopedia article about Ludolph van Ceulen. Ludolph van Ceulen in Free onlineEnglish dictionary, thesaurus and encyclopedia. Ludolph van Ceulen. http://encyclopedia.thefreedictionary.com/Ludolph van Ceulen

Dictionaries: General Computing Medical Legal Encyclopedia Ludolph van Ceulen Word: Word Starts with Ends with Definition Ludolph van Ceulen 28 January January 28 is the 28th day of the year in the Gregorian Calendar. There are 337 days remaining (338 in leap years). Events 1521 - Diet of Worms begins, lasting until May 25. 1547 - Edward VI becomes King of England. 1573 - articles of Warsaw Confederation are signed, sanctioning religious freedom in Poland 1788 - The first penal colony is founded at Botany Bay, Australia. Click the link for more information. Centuries: 15th century - 16th century - 17th century Decades: 1490s 1500s 1510s 1520s 1530s - Years: 1535 1536 1537 1538 1539 - Events January 6 - King Henry VIII of England marries Anne of Cleves, his fourth Queen consort. July 9 - King Henry VIII of England divorces Anne of Cleves, his fourth Queen consort. Click the link for more information. 31 December December 31 is the 365th day of the year (366th in leap years) in the Gregorian Calendar, as the final day of the Gregorian year. Events 406 - Vandals, Alans and Suebians cross the Rhine, beginning an invasion of Gallia

5. 1600 In Science - Encyclopedia Article About 1600 In Science. Free Access, No Re Ludolph van ceulen ludolph van Ceulen (28 January 1540 in Hildesheim, Germany 31 December 1610 in Leiden, The Netherlands) was a German mathematician who http://encyclopedia.thefreedictionary.com/1600 in science

Dictionaries: General Computing Medical Legal Encyclopedia 1600 in science Word: Word Starts with Ends with Definition The year 1600 CE in science For the journal named Science , visit Science (journal). Science (from scientia, Latin for "knowledge") refers to the systematic acquisition of new knowledge about nature and the body of already existing knowledge so gained. The scientific method is based on careful observation and the testing of theories by experiment. Science does not claim to make any statements about how nature actually "is", for the scientist should know that we can only make conclusions about our observations of nature. The development of Quantum Mechanics in the early 20th century showed us that our observations equate to interactions, and the incredible implications of wave-particle duality made "objectivity" in science practically impossible. Click the link for more information. and technology Technology has more than one definition. One is the development and application of tools, machines, materials and processes that help to solve human problems. As a human activity, technology predates both science and engineering. The term technology thus often characterises inventions and gadgets using recently-discovered scientific principles and processes. However, even very old inventions such as the wheel exemplify technology.

6. Ludolph Van Ceulen - Wikipedia, The Free Encyclopedia Ludolph van Ceulen. Ludolph van Ceulen (28 January 1540 31 December1610) was a German mathematician who emigrated to the Netherlands. http://en.wikipedia.org/wiki/Ludolph_van_Ceulen

Ludolph van Ceulen From Wikipedia, the free encyclopedia. Ludolph van Ceulen 28 January 31 December ) was a German mathematician who emigrated to the Netherlands . Born in Hildesheim, Germany , he was appointed the first professor of mathematics at the University of Leiden in and died in Leiden edit Ludolph van Ceulen spent a major part of his life calculating the numerical value of the mathematical constant , using essentially the same methods as those employed by Archimedes some 1800 years earlier. He published a 20-decimal value in his 1596 book Van de Cirkel ('On the Circle'), later expanding this to 35 decimals. After his death, the 'Ludolphine number' was engraved on his tombstone in Leiden. The tombstone was later lost, but has been restored in the year 2000. edit External references Het grafschrift van Ludolph van Ceulen http://www.math.rug.nl/~top/pi-dag/graf.pdf (in Dutch). This article is a stub . You can help Wikipedia by expanding it Views Article Discussion Edit History Personal tools Log in Navigation Main Page Community portal Current events Recent changes ... Donations Search Toolbox What links here Related changes Special pages This page was last modified 20:05, 5 May 2004.

7. Ludolph Van Ceulen Ludolph van Ceulen. Two thousand years ago, the ratio between the. Ludolphvan Ceulen was born at Hildesheim, Germany,. 28 January, 1540. http://www.angelfire.com/id/vancuren/ludolph.html

var cm_role = "live" var cm_host = "angelfire.lycos.com" var cm_taxid = "/memberembedded" Ludolph van Ceulen Two thousand years ago, the ratio between the circumference of a circle and its diameter was taken to be "3". Although the value was close, as time went on efforts were made to refine the ratio to a more precise constant. Greek mathemetician, Archimedes, correctly asserted that it fell between 3 10/70, and 3 10/71. In the computer age, the number has been calculated to the one millionth decimal place, and has been determined to be an irrational number, without a finite definition. Ludolph van Ceulen was born at Hildesheim, Germany, 28 January, 1540. Like many Germans during the Catholic Inquisitions, he emmigrated to The Netherlands. He taught Fencing and Mathematics in Delft until 1594, when he moved to Leiden and opened a Fencing School. In 1600 he was appointed to the Engineering School at Leiden, where he spent the remainder of his life teaching Mathematics, Surveying, and Fortification. He wrote several books, including one titled "On The Circle", in

8. Ludolph Van Ceulen - Wikipedia Translate this page Ludolph van Ceulen. aus Wikipedia, der freien Enzyklopädie. Ludolphvan Ceulen (*28. Januar 1540 in Hildesheim, † 31. Dezember http://de.wikipedia.org/wiki/Ludolph_van_Ceulen

Ludolph van Ceulen aus Wikipedia, der freien Enzyklopädie Ludolph van Ceulen 28. Januar in Hildesheim 31. Dezember in Leiden ) war ein niederländischer Mathematiker . Ludolph van Ceulen wurde durch die auf 35 Dezimalstellen genaue Berechnung der Kreiszahl bearbeiten Van Ceulens Berechnungen Archimedes Vielecken Kreis n des n-Ecks neu zu berechnen. Archimedes fand mit Hilfe von Strahlensatz und Satz des Pythagoras und s n n n n bearbeiten Mathematiker Jahr Dezimalstellen Muhammad ibn Musa al-Chwarizmi ca. 800 François Viète Ludolph van Ceulen Georg Freiherr von Vega Daniel Shanks Levi B. Smith, John W. Wrench Daniel Shanks, John W. Wrench Yasumasa Kanada, Sayaka Yoshino, Yoshiaki Tamura Yasumasa Kanada, Yoshiaki Tamura, Yoshinobu Kubo Chudnovskys Yasumasa Kanada, Daisuke Takahashi Yasumasa Kanada, Daisuke Takahashi bearbeiten Weblinks http://blk.mat.uni-bayreuth.de/~thomas/geosem/kreis/p.htm http://www-gap.dcs.st-and.ac.uk/~history/HistTopics/Pi_chronology.html Views Artikel Diskussion bearbeiten Versionen Persönliche Werkzeuge Anmelden Navigation Hauptseite Wikipedia-Portal Aktuelle Ereignisse Letzte Änderungen ... Spenden an Wikimedia Suche Werkzeuge Links auf diese Seite Verlinkte Seiten Spezialseiten Andere Sprachen English Diese Seite wurde zuletzt geändert um 01:24, 10. Mai 2004.

9. Ludolph Van Ceulen Encyclopedia. Main Page See live article, Ludolph van Ceulen. External references.Het grafschrift van Ludolph van Ceulen (in Dutch). This article is a stub. http://www.sciencedaily.com/encyclopedia/ludolph_van_ceulen

Match: sort by: relevance date Free Services Subscribe by email RSS newsfeeds PDA-friendly format loc="/images/" A A A Find Jobs In: Healthcare Engineering Accounting College Contract / Freelance Customer Service Diversity Engineering Executive Healthcare Hospitality Human Resources Information Tech International Manufacturing Nonprofit Retail All Jobs by Job Type All Jobs by Industry Relocating? Visit: Moving Resources Moving Companies Mortgage Information Mortgage Calculator Real Estate Lookup Front Page Today's Digest Week in Review Email Updates ... Outdoor Living Encyclopedia Main Page See live article Ludolph van Ceulen Ludolph van Ceulen (28 January 1540 in Hildesheim, Germany - 31 December 1610 in Leiden, The Netherlands) was a German mathematician who emigrated to the Netherlands. He was appointed the first professor of mathematics at the university of Leiden in 1600. Ludolph van Ceulen spent a major part of his life calculating the numerical value of the mathematical constant , using essentially the same methods as those employed by Archimedes some 1800 years earlier. He published a 20-decimal value in his 1596 book

10. Börsenspiel Hauptseite Translate this page Ludolph van Ceulen. Ludolph van Ceulen wurde durch die auf 35 Dezimalstellengenaue Berechnung der Kreiszahl p berühmt. Bis ins 19. http://wikipedia.t-st.de/data/Ludolph_van_Ceulen

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11. Ludolph Van Ceulen - Information An online Encyclopedia with information and facts Ludolph van Ceulen Information,and a wide range of other subjects. Ludolph van Ceulen - Information. http://www.book-spot.co.uk/index.php/Ludolph_van_Ceulen

Ludolph van Ceulen - Information Home Mathematical and natural sciences Applied arts and sciences Social sciences and philosophy ... Interdisciplinary categories Ludolph van Ceulen (28 January 1540 in Hildesheim, Germany - 31 December 1610 in Leiden, The Netherlands) was a German mathematician who emigrated to the Netherlands. He was appointed the first professor of mathematics at the university of Leiden in 1600. Ludolph van Ceulen spent a major part of his life calculating the numerical value of the mathematical constant , using essentially the same methods as those employed by Archimedes some 1800 years earlier. He published a 20-decimal value in his 1596 book Van de Cirkel ('On the Circle'), later expanding this to 35 decimals. After his death, the 'Ludolphine number' was engraved on his tombstone in Leiden. The tombstone was later lost, but has been restored in the year 2000. External references Het grafschrift van Ludolph van Ceulen (in Dutch). This article is a http://www.wikipedia.org/wiki/Perfect_stub_article " class='external' title="">stub . You can help Wikipedia by http://www.wikipedia.org/wiki/Find_or_fix_a_stub

12. Sonnets By C.N.Gomersall In Memoriam, ludolph van ceulen ( 15401610) ludolph van ceulen's not a household name, No sooner, though, is L. van ceulen dead. Than comes to pass his unacknowledged http://faculty.luther.edu/~gomersni/poems.html

First-Year Spanish Aunque sea una empresa muy osada Tejendo esta estrofa enredada En De su ritmo delicado y elegante, Asimismo, si quisiera conocer A alguien, olvidando la prudencia Esta sola advertencia: un error Sino que es peligroso en el amor. Touch Wood only one word is longer than two syllables, and that the last I like to touch the trees as I pass by, To give a friendly pat upon the bark Of some rough pine or, reaching shoulder high, To shake hands with a willow in the park. Tug gently on a leaf; a root may know Your gesture to be one that it can share. Grasp a low branch; the highest one may blow About in answer, in the calmest air. Perhaps we should treat people just like trees: Enjoy them without saying very much, And comfort them, or help them feel at ease With nothing but a light and simple touch. If only we were all made out of wood We'd talk less, and be better understood. In Memoriam, Ludolph van Ceulen Ludolph van Ceulen's not a household name, Not one to conjure with, nor one to drop; For us today, his only claim to fame

13. Van_Ceulen Biography of ludolph van ceulen (15401610) ludolph van ceulen. Born 28 Jan 1540 in Hildesheim, Germany ludolph van ceulen does not appear to have had a university education as his parents http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Van_Ceulen.html

Ludolph van Ceulen Born: 28 Jan 1540 in Hildesheim, Germany Died: 31 Dec 1610 in Leiden, Netherlands Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Ludolph Van Ceulen does not appear to have had a university education as his parents were not sufficiently wealthy to pay for one. He held a number of posts not only as a teacher of mathematics but also as a fencing teacher. He taught fencing and mathematics in Delft, then in 1594, opened a fencing school in Leiden. In 1600 he was appointed to the Engineering School in Leiden. For the last ten years of his life he taught arithmetic, surveying and fortification in the engineering school. Van Ceulen is famed for his calculation of p to 35 places which he did using polygons with 2 sides. He spent most of his life doing this and it is fitting that the 35 places of p are engraved on his tombstone. In Germany p was called the Ludolphine number for a long time. Van Ceulen had several friends among the mathematicians of the time. In particular his friendships with Simon

14. Ceulen, Ludolph Van ceulen, ludolph van. Note the creators of the Galileo Project and this catalogue cannot answer email on involved, in addition to van ceulen, Simon van der Eycke, Coignet, Stevin http://es.rice.edu/ES/humsoc/Galileo/Catalog/Files/ceulen.html

Catalog of the Scientific Community Ceulen, Ludolph van Note: the creators of the Galileo Project and this catalogue cannot answer email on genealogical questions. 1. Dates Born: Hildesheim, Germany, 28 Jan. 1540 Died: Leiden, 31 December 1610 Dateinfo: Dates Certain Lifespan: 2. Father Occupation: A Merchant Bosmans says that his father was in very modest condition, so that Van Ceulen's education stopped with elementary. I interpret this as poor. 3. Nationality Birth: German Career: Dutch Death: Dutch 4. Education Schooling: No University No evidence of any university education. 5 Religion: Cal. Nothing whatever is said; he must have conformed to the Calvinist church of the Netherlands. 5. Religion Affiliation: 6. Scientific Disciplines Primary: Mathematics 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. In this he made himself an expert in trigonometry. 7. Means of Support Primary: Schoolmaster, Academic 1580: in Delft he was a fencing master and a teacher of mathematics.

15. Sac.uky.edu/~ksmcke0/Van_Ceulen/ sac.uky.edu/~ksmcke0/van_ceulen ludolph van ceulenludolph van ceulen. ludolph van ceulen (28 January 1540 in Hildesheim,Germany 31 December 1610 in Leiden, The Netherlands) was http://sac.uky.edu/~ksmcke0/Van_Ceulen/

16. List Of People By Name: Ce Zulu king; Ceulemans, Jan, football player; Ceulemans, Raymond, billiardsplayer; ceulen, ludolph van, (15401610), mathematician; Ceva http://www.fact-index.com/l/li/list_of_people_by_name__ce.html

Main Page See live article Alphabetical index List of people by name: Ce List of people by name A B C D E F G ... Cd Ce Cf Cg Ch Ci ... Co - Cp - Cq - Cr Cs - Ct - Cu Cv - Cw - Cx - Cy Cz Ceannt, Eamonn, signatory of 1916 Proclamation Ceaucescu, Nicolae , (1918-1989), Romanian communist dictator Ceawlin of Wessex , (560-591), British monarch Ceberano, Kate , actress and musician Cec, Toncka, (1896-1943), national heroine. Cech, Eduard, (1893-1960), mathematician Cecil, Robert , (born 1612), 1st Earl of Salisbury, 1st Viscount Cranborne Cedeño, Melwin (born c. 1968) Puerto Rican actor Ceffons, Peter, scholastic philosopher Ceja, Gonzalo, musician Cela, Camilo José , (1916-2002) writer. Nobel Prize in Literature Celadion of Alexandria, (152-166), Coptic Pope, Patriarch of Alexandria Celan, Paul , (1920-1970), poet Celestine I, Pope Celestine II, Pope Celestine III, Pope Celestine IV, Pope ... Celestine V, Pope , (died 1292) Celio, Enrico , (1889-1980), Swiss Federal Councilor Celio, Nello , (1914-1995), Swiss Federal Councilor Cellini, Benvenuto , (1500-1562), sculptor Celsius, Anders

17. Math Forum - Ask Dr. Math How did ludolph van ceulen estimate pi by inscribing and circumscribing a circle with squares? 11/02/98 at 021909 From Ryan Hammond Subject ludolph van ceulen and pi Dear Dr I'm looking http://mathforum.com/dr.math/problems/hammond11.2.98.html

Associated Topics Dr. Math Home Search Dr. Math 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. The Internet site I went to said he approximated pi to the first 35 digits by inscribing polygons in a circle. 1) How do you figure out pi this way? The site also said he used polygons with 2 to the 62nd power sides. My friend said that making a polygon with this many sides is impossible by human hand. And then he gave a reasonable argument. 2) So my second question is how did van Ceulen make such a large polygon? http://mathforum.org/dr.math/ Associated Topics High School Geometry High School History/Biography High School Triangles and Other Polygons Middle School Geometry ... Middle School Triangles and Other Polygons Search the Dr. Math Library: Find items containing (put spaces between keywords): Click only once for faster results: [ Choose "whole words" when searching for a word like age.

18. Ludolph Van Ceulen And Pi ludolph van ceulen and Pi How did ludolph van ceulen estimate pi by inscribing and circumscribing a circle with squares? Hammond http://rdre1.inktomi.com/click?u=http://mathforum.org/library/drmath/view/52555.

19. [HM] Ludolph Van Ceulen By Dick Klingens HM ludolph van ceulen by Dick Klingens. reply to this message. post a message on a new topic. Back to HistoriaMatematica Discussion Group. Subject http://mathforum.com/epigone/historia_matematica/doishingren

[HM] Ludolph van Ceulen by Dick Klingens reply to this message post a message on a new topic Back to Historia-Matematica Discussion Group Subject: [HM] Ludolph van Ceulen Author: dklingens@pandd.demon.nl Date: Thu, 8 Jun 2000 06:37:43 +0200 On the July 5th, 2000 a memorial stone will be unveiled, honering Ludolph van Ceulen. The stone will be placed in the Pieterskerk (St. Pieter's Church) in Leiden (Netherlands) at the some spot as his lost gravestone. On the memorial stone Ludolph's 35 decimal digits of Pi will be engraved. In the afternoon and in the evening Pieter Borwein will give the Beeger lecture 2000 at the Leiden University (it's on Pi). The reveiling of the memory stone is an activity of the Wiskundig Genootschap (Dutch Mathematic Society) in connection with WMY2000. More information (in Dutch): http://www.math.rug.nl/~top/pi-dag/6juli.html http://www.pandd.demon.nl The Math Forum

20. VAN CUREN FAMILY HOME PAGE van CUREN FAMILY HOME PAGE. In the 1500s, Spain was engaged in a "spiritual cleansing" known as the "Inquisition". To nonCatholics, this usually meant Imprisonment, torture, and/or execution. from Cologne often attached the suffix "van ceulen"(aka van Keulen) to their names, which literally means van KEULEN CHARTMAKERS OF AMSTERDAM. ludolph van ceulen, MATHEMATICIAN http://www.all-surnames.com/cgi-bin/jump.cgi?ID=11048

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