1. Ludolph Van Ceulen Ludolph van Ceulen. Ludolph van Ceulen (28 January 1540 in Hildesheim,Germany 31 December 1610 in Leiden, The Netherlands) was http://www.fact-index.com/l/lu/ludolph_van_ceulen.html

Main Page See live article Alphabetical index Ludolph van Ceulen Ludolph van Ceulen (28 January 1540 in Hildesheim, Germany - 31 December 1610 in Leiden, The Netherlands) was a German mathematician that emigrated to The Netherlands. In Germany Pi was called the Ludolphine number for a long time. This article is from Wikipedia . All text is available under the terms of the GNU Free Documentation License

2. 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

3. 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.

4. 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

5. Biography-center - Letter V and.ac.uk/~history/Mathematicians/ Amringe.html. van ceulen, ludolph. wwwhistory.mcs.st-and.ac.uk/~history/ Mathematicians/van_ceulen.html. van Dantzig, David http://www.biography-center.com/v.html

Visit a random biography ! Any language Arabic Bulgarian Catalan Chinese (Simplified) Chinese (Traditional) Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Norwegian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Turkish V 205 biographies Vaca, Alva Nuñez Cabeza de www.pbs.org/weta/thewest/people/a_c/cabezadevaca.htm Vaca, Alva Nuñez Cabeza de www.newadvent.org/cathen/03126c.htm Vacca, Giovanni www-history.mcs.st-and.ac.uk/~history/Mathematicians/Vacca.html Vaga, Perino del www.getty.edu/art/collections/bio/a952-1.html Vailati, Giovanni www-history.mcs.st-and.ac.uk/~history/Mathematicians/Vailati.html Val, Patrick du www-history.mcs.st-and.ac.uk/~history/Mathematicians/Du_Val.html Vala, Katri www.kirjasto.sci.fi/kvala.htm VALEJO, Christiane www.christiane-valejo.com/Biography.htm Valentin, www.kirjasto.sci.fi/valentin.htm Valentin, Moise www.kfki.hu/~arthp/bio/v/valentin/biograph.html Valentine, www.knight.org/advent/cathen/15254b.htm Valerio, Luca

6. 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

7. 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

8. 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/

9. 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.

10. 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.

11. 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.

12. [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

13. 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 Categories Mathematicians 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 20:32, 1 Jun 2004.

14. 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

15. π - Wikipedia, The Free Encyclopedia 1596 ludolph van ceulen calculates pi up to 35 digits. The German mathematicianludolph van ceulen (circa 1600) computed the first 35 decimals. http://en.wikipedia.org/wiki/Pi

From Wikipedia, the free encyclopedia. (Redirected from Pi Alternative meanings: Pi (letter) Pi meson The mathematical constant (written as " pi " when the Greek letter is not available) is ubiquitous in many areas of mathematics and physics . In Euclidean plane geometry ratio of a circle 's circumference to its diameter , or as the area of a circle of radius analytically using trigonometric functions , e.g. as the smallest positive x for which sin x ) = 0, or as twice the smallest positive x for which cos x ) = 0. All of these definitions are equivalent. Archimedes ' constant (not to be confused with Archimedes' number Ludolph 's constant or Ludolph's number not a physical constant of nature , but rather a mathematical constant defined independently of any physical measurements. The first sixty-four decimal http://www.research.att.com/cgi-bin/access.cgi/as/njas/sequences/eisA.cgi?Anum=A000796 in OEIS ) are: Wikisource links: Wikisource - Pi to 1,000 Places http://sources.wikipedia.org/wiki/Pi_to_1%2C000_places 10,000 Places http://sources.wikipedia.org/wiki/Pi_to_10%2C000_places 100,000 Places

16. Roomen, Andriaan Van Roomen, Andriaan van. Note the creators of the Galileo Project and this catalogue cannot answer email on he established a connection with ludolph van ceulen. He was acquainted with http://es.rice.edu/ES/humsoc/Galileo/Catalog/Files/roomen.html

Catalog of the Scientific Community Roomen, Andriaan van Note: the creators of the Galileo Project and this catalogue cannot answer email on genealogical questions. 1. Dates Born: Louvain, 29 Sept. 1561 Died: Mainz, 4 May 1615 He died in travel, as he returned from Würzburg to Louvain. Dateinfo: Dates Certain Lifespan: 2. Father Occupation: Merchant Same name, a merchant. No indication of financial status. 3. Nationality Birth: Belgian Career: Belgain, German, Polish Death: German 4. Education Schooling: Louvain; M.A., M.D. He studied at the Jesuit College in Cologne. One source says that he studied medicine at Louvain and then somewhere in Italy (no university mentioned), where he completed an M.A. and M.D. It appears obvious from his career that he had an M.D., and thus the story appears plausible. I assume a B.A. or its equivalent. 5. Religion Affiliation: He had to have been Catholic. 6. Scientific Disciplines Primary: Mathematics Subordinate: Natural Philosophy, Astronomy, Medicine In Würzburg, where he was a professor of medicine and where he really created the medical faculty in a new university, he published a continuing series of medical theses defended by his students. They are all wholly traditional, and there is no indication at all that Roomen contributed to medical science. A prolific author, Roomen wrote also on astronomy and natural philosophy. As with medicine, his opinions in these fields were wholly traditional. After some thought, I list the three as subordinate disciplines.

17. VAN CUREN FAMILY HOME PAGE Letters by Mathijs van ceulen, 16381640. van KEULEN CHARTMAKERS OF AMSTERDAM.ludolph van ceulen, MATHEMATICIAN. DUTCH SOLDIERS ON SKATES. JANSEN FAMILY. http://www.angelfire.com/id/vancuren/home.html

var cm_role = "live" var cm_host = "angelfire.lycos.com" var cm_taxid = "/memberembedded" VAN CUREN FAMILY HOME PAGE In the 1500s, Spain was engaged in a "spiritual cleansing" known as the "Inquisition". To non-Catholics, this usually meant Imprisonment, torture, and/or execution. As the Spanish began conquering Western Europe, many were forced to flee to the safety of the Dutch States. Such is the case of Cologne, which fell to Spain in 1559. As a matter of identification, wealthy classes from Cologne often attached the suffix "van Ceulen"(aka van Keulen) to their names, which literally means "of Cologne". Eventually, "van" names became recognized as surnames, and thus, the van Keulen/van Ceulen family was created. Mathijs Jansen Van Ceulen, 1602-1648, first arrived in North America(New York) in November, 1632, stopping in either New Amsterdam(New York) or his own colony, Zawaanendael(Lewes, Delaware) for resupply enroute to Brazil. In June, 1639 he arrived in New Amsterdam aboard the West India Raven from Recife, Brazil. He was found in New Amsterdam(Manhattan)in until Aug, 1639, then back in Recife until 1641. By late 1641 he had made Fort Orange(aka Albany, NY) his permanent home. He was one of the 19 Lord-Directors of the Dutch West India Trading Company, empowered with the Armorial Bearings of an Earl, and known as one of the co-Patroons of Zawaanendal (Tenant-farm Colony-Swan Valley, Delaware River, near Lewes). The Dutch colonies at New Netherlandt proved to be a dismal failure and were eventually taken over by the British in 1664, at which time it was renamed New York. Mathijs' land and estate were confirmed to his heirs in 1667, including a parcel of 50 Morgens of land in the Pappermemmins (Manhats - Manhattan) known as

18. PHONE-SOFT INTERNET DIRECTORY INTERNATIONAL:NUMBER PI July 6, 2000 the lost tombstone of ludolph van ceulen, appointed in Leiden in 1600, and famous for of Pi and Its Irrational Friends. van ceulen, ludolph (1540-1610) http://www.phs2.net/cwi/L3/o1116i.htm

TOP-LINK UP-LINK ADD URL SEARCH ... E-MAIL NUMBER PI 400 million digits of Pi - gzipped collection of Pi digits. A Positive Light - Slice of Pi Anyone? - The amazing number pi is the subject of this letter, with a salute to Pi Day and a collection of interesting facts and links that make a terrific treat for everyone. It's science everyone can appreciate. A Slice Of Pi - Digits of pi, chronology of pi, expressions for pi, other constants, maths books, fractals, Rolling Stones lyrics, computer games A Tribute to Pi - Includes information, a "piem," and clubs for people who have memorized 100+ digits of pi Ancient Pi: Knowers of the Universe Approximating Pi with the Monte Carlo Method - a brief description of how to approximate pi by picking random numbers (aka. the Monte Carlo Method). Archimedes' Constant - geometric and analytic properties of Pi, with many formulas and some unsolved problems too. Brian's Page of Pi Calculating Pi - MPI example programs. Chahm's Page of Pi - topics like: "Exactly how many digits is too many?" and "No, I really want to know how many digits you have memorized." Da Ho's Pi Page Dara's Pi Page Digit Connection Digits of Pi - 50 million digits in gzip, or 10000 in text.

19. Biografia De Van Ceulen, Ludolph Translate this page van ceulen, ludolph. (Hildesheim, 1540-Leiden, 1610) Matemático holandés.Profesor en Amsterdam y Leiden, es conocido principalmente http://www.biografiasyvidas.com/biografia/v/van_ceulen.htm

Inicio Buscador Utilidades Recomendar sitio Enlaces Van Ceulen, Ludolph (Hildesheim, 1540-Leiden, 1610) Matemático holandés. Profesor en Amsterdam y Leiden, es conocido principalmente por haber calculado el valor de con una aproximación de 35 cifras decimales por el método de los perímetros. Escribió Fundamentos aritméticos y geométricos Inicio Buscador Recomendar sitio

20. Lexikon - Ludolph Van Ceulen Definition Erklärung Bedeutung Translate this page Was Wer Wo ist ludolph van ceulen - Definition Erklärung Bedeutung vonludolph van ceulen. ludolph van ceulen. ludolph van ceulen (*28. http://www.net-lexikon.de/Ludolph-van-Ceulen.html

Suche: Info Mitglied werden A B ... Impressum Beta 0.71 powered by: akademie.de Wikipedia PHP PostgreSQL ... englischen Lexikon Google News zum Stichwort Ludolph van Ceulen Definition, Bedeutung, Erkl¤rung im Lexikon Ludolph van Ceulen 28. Januar in Hildesheim 31. Dezember in Leiden ) war ein niederl¤ndischer Mathematiker . Ludolph van Ceulen wurde durch die auf 35 Dezimalstellen genaue Berechnung der Kreiszahl 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 Mathematiker Jahr Dezimalstellen al-Khwarizmi ca. 800 Fran§ois Vi¨te 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 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 B¼cher bei Amazon.de zum Stichwort: Ludolph van Ceulen Info: Dieser Artikel aus Wikipedia wird durch die GNU FDL lizenziert.

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