41. Mostra Eventos Da Data Selecionada Translate this page 15/02/1839 - Nascimento de Hieronymous Georg Zeuthen (matemático dinamarquês) 15/02/1847- Morte do matemático francês germinal Pierre dandelin 16/02/1980 http://www.ponteiro.com.br/mostrad8.php?w=13&pg=2

42. Wikipedia: Matematik (Kitajska, 1270?1330?). D. germinal Pierre dandelin? (Francija, Belgija,1794?-1847?) David van Dantzig? (Nizozemska, 1900?-1959?) George Dantzig? http://sl.wikipedia.com/wiki.cgi?Matematik

43. Mathematiker - Wikipedia germinal Pierre dandelin (Frankreich, Belgien,1794-1847); David van Dantzig (Niederlande, 1900-1959); George Dantzig http://de.wikipedia.org/wiki/Mathematiker

Hauptseite Letzte Änderungen Seite bearbeiten Versionen Spezialseiten Meine Benutzereinstellungen Meine Beobachtungsliste Zeige Letzte Änderungen Dateien hochladen Zeige hochgeladene Dateien Zeige registrierte Benutzer Zeige Seitenstatistik Zufälliger Artikel Zeige verwaiste Artikel Zeige verwaiste Dateien Zeige beliebte Artikel Zeige gewünschte Artikel Zeige kurze Artikel Zeige lange Artikel Zeige neue Artikel Zeige alle Artikel (alphabetisch) Zeige blockierte IP-Addressen Wartungsseite Externe Buchhandlungen Druckversion Diskussion Anmelden Hilfe Andere Sprachen: English Esperanto Français Slovensko Mathematiker aus Wikipedia, der freien Enzyklopädie Wissenschaftler deren Fachgebiet das Studium der Mathematik ist. Einige berühmte Mathematiker (in alphabetischer Reihenfolge): (Übernommen aus der int. WP) Niels Henrik Abel Norwegen Abu Ja'far Muhammad ibn Musa al-Khwarizmi Irak , ca. 780-850) André Marie Ampère Frankreich Charles Babbage Großbritannien ... Griechenland , ca. 325 v.Chr. - ca. 265 v.Chr. ) Leonhard Euler Schweiz Paul Erdös Ungarn ... Italien Leonardo von Pisa Fibonacci Italien Jean-Baptiste Joseph Fourier Frankreich ... Griechenland , ca. 569 v. Chr. - ca. 475 v. Chr.)

44. History - Page Six Similar ideas had already been suggested independently by Edward Waring (17341798),germinal Pierre dandelin (1794-1847), Moritz Abraham Stern (1807-1894 http://www.vimagic.de/hope/1/history_six.html

Jacques Charles Francois Sturm (1803-1855) finds the number of real roots of a given polynomial in a given interval. Carl Gustav Jacobi (1804-1851) studies modular equations for elliptic functions which are fundamental for Hermite's 1858 solution of quintics. Augistin-Louis Cauchy (1789-1857) determines how many roots of a polynomial lie inside a given contour in the complex plane. Evariste Galois (1811-1832) writes down the main ideas of his theory in a letter to Auguste Chevalier the day before he dies in a duel. Friedrich Julius Richelot (1808-1875) solves the cycolotomic equation: z in square roots. George Birch Jerrard (1804-1863) shows that every quintic can be transformed to: z + az + b = Karl Heinrich Graeffe (1799-1873) invents a widely used method to determine numerical roots by hand. Similar ideas had already been suggested independently by Edward Waring (1734-1798), Germinal Pierre Dandelin (1794-1847), Moritz Abraham Stern (1807-1894), and Nickolai Lobachevski (1792-1856). Johann Franz Encke (1791-1865) later perfects the method.

45. Untitled Document The following justification of their equivalence is based on ideas first conceivedby germinal dandelin in 1822 and are of my favourite bits of mathematics. http://www.dpmms.cam.ac.uk/~ims25/conics.html

Since their first discovery, credited to a Greek man Menaechmus, some 350 years before the common era, conic sections have been observed in a variety of situations. The Earth travels round the sun in the shape of an ellipse, radio dishes and car headlights are parabola shaped because of the way light is reflected from their surface (radio dishes receiving light and car headlights emitting light) and in my own research I recently came across these curves while investigating convergence criteria of continued fractions. We now have a fair few examples of.... what exactly? The Greeks gave the official definition of conic sections as the curves formed through the intersection ('section') of a cone ('conic') and a plane. The curves are the outlines of the intersecting region. In the example at the beginning, the cone was the beam of the torch, the plane was the floor and the intersection was the image on the floor. It has since proved most consistent to define the conic sections as the curves formed through intersecting a plane and two cones, one above the other. %%%%% ELLIPSE,PAR,HYP %%%%%

46. Wallonie - Histoire - L'évolution Des Sciences Et Des Techniques En Wallonie (3 Translate this page métallurgie. Enfin, un polytechnicien français, germinal dandelin,enseigna peu de temps l'exploitation des mines. Mais très http://www.wallonie-en-ligne.net/wallonie-histoire/hist-econom-sociale/chap9-3.h

Histoire économique et sociale L'évolution des sciences et des techniques en Wallonie Première partie Deuxième partie - Troisième partie Robert Halleux Directeur du Centre d'Histoire des Sciences et des Techniques de l'Université de Liège Anne-Catherine Bernès Directeur-adjoint du Centre d'Histoire des Sciences et des Techniques de l'Université de Liège Luc Etienne Conseiller au Cabinet du Ministre des Technologies La recherche fondamentale Les choix furent si contestés que le ministre jugea bon de s'en expliquer : Malgré son agressivité et son persiflage, le texte vaut d'être médité. L'équilibre entre influence française et influence allemande sera maintenu par le gouvernement de la Belgique indépendante, combiné avec le recrutement local, voire dynastique. Il produira les plus heureux effets, en faisant de Liège un microcosme de la science européenne. L'influence allemande, quant à elle, imprègne l'enseignement des lettres, du droit et surtout de la médecine. Fohmann y sera suivi par Joseph Antoine Spring (1814-1872) élève de Von Ringseis à Berlin, par Théodore Schwann, élève de Müller à Bonn et à Berlin, puis par Gussenbauer, Fuchs et von Winiwarter. Or, toute cette génération est profondément influencée par la Naturphilosophie qui l'incite en même temps aux spéculations théologiques les plus élevées et à l'expérimentation la plus rigoureuse. Gaëde et Spring ont été disciples de Schelling.

47. Lebensdaten Von Mathematikern Translate this page d'Alembert, Jean (17.11.1717 - 29.10.1783) dandelin, Pierre germinal (1794 - 1847)Daniell, Percy John (9.1.1889 - 25.5.1946) Danti, Egnatio (1536 - 1586) van http://www.mathe.tu-freiberg.de/~hebisch/cafe/lebensdaten.html

Diese Seite ist dem Andenken meines Vaters Otto Hebisch (1917 - 1998) gewidmet. By our fathers and their fathers in some old and distant town from places no one here remembers come the things we've handed down. Marc Cohn Dies ist eine Sammlung, die aus verschiedenen Quellen stammt, u. a. aus Jean Dieudonne, Geschichte der Mathematik, 1700 - 1900, VEB Deutscher Verlag der Wissenschaften, Berlin 1985. Helmut Gericke, Mathematik in Antike und Orient - Mathematik im Abendland, Fourier Verlag, Wiesbaden 1992. Otto Toeplitz, Die Entwicklung der Infinitesimalrechnung, Springer, Berlin 1949. MacTutor History of Mathematics archive A B C ... Z Abbe, Ernst (1840 - 1909) Abel, Niels Henrik (5.8.1802 - 6.4.1829) Abraham bar Hiyya (1070 - 1130) Abraham, Max (1875 - 1922) Abu Kamil, Shuja (um 850 - um 930) Abu'l-Wafa al'Buzjani (940 - 998) Ackermann, Wilhelm (1896 - 1962) Adams, John Couch (5.6.1819 - 21.1.1892) Adams, John Frank (5.11.1930 - 7.1.1989) Adelard von Bath (1075 - 1160) Adler, August (1863 - 1923) Adrain, Robert (1775 - 1843)

48. Ellipsi On Kartioleikkaus (Solmu 1/1998-1999) dandelinin palloja (belgialainen matemaatikko ja insinööri, mm. Napoleonin armeijassataistellut germinal Pierre dandelin, 17941847; ks. lähemmin St. http://solmu.math.helsinki.fi/1998/2/kivela/

Geometriakulma: Ellipsi on kartioleikkaus Ellipsi on tapana määritellä käyräksi - tai oikeastaan pistejoukoksi - jonka jokaisella pisteellä on seuraava ominaisuus: jos lasketaan ellipsin pisteen etäisyydet kahdesta kiinteästä pisteestä ja muodostetaan näiden summa, niin tulos on vakio, so. riippumaton siitä, mikä ellipsin piste on kyseessä. Kiinteitä pisteitä kutsutaan ellipsin polttopisteiksi Jos polttopisteet sijoitetaan xy -tason pisteisiin (c,0) ja (-c,0) ja merkitään etäisyyksien vakiosummaa , saadaan ellipsin yhtälöksi x /a + y /b , missä on merkitty b = a - c . Tämän johtaminen on hyvä analyyttisen geometrian harjoitustehtävä; suosittelen lukijalle. Toisaalta ellipsin sanotaan olevan myös kartioleikkaus . Muita kartioleikkauksia ovat paraabeli ja hyperbeli, joihin en tässä lähemmin puutu, vaikka ne voisikin käsitellä samaan tapaan. Ajateltakoon suoraa ympyräkartiota kuva 1 ). Tämän voi ajatella syntyvän seuraavasti: Olkoon annettuna ympyräviiva ja kiinteä piste - kartion huippu . Tämä sijaitkoon sellaisella ympyrän tason normaalilla, joka kulkee ympyrän keskipisteen kautta. Jos suora liikkuu siten, että se kaiken aikaa kulkee huipun kautta ja tukeutuu ympyräviivaan, syntyy kartiopinta. Itse asiassa kyseessä on kaksihaarainen kartiopinta suoran äärettömästä pituudesta johtuen: symmetriset kartiomaiset osat huipun kummallakin puolella. Liikkuvalla suoralla on tietty kaltevuus ympyrän tasoon nähden. Leikataan kartiota tasolla, jonka kaltevuus on tätä pienempi (

49. Lijst Van Wiskundigen - Wikipedia NL D. Francois d'Aguillon? 15661617 germinal Pierre dandelin? (Frankrijk, Belgie,1794-1847) David van Dantzig? (Nederland, 1900-1959) George Dantzig? http://nl.wikipedia.org/wiki/Lijst_van_wiskundigen

Hoofdpagina Recente wijzigingen Pagina bewerken Voorgeschiedenis Speciale pagina's Mijn gebruikersvoorkeuren instellen Mijn volglijst tonen Recent bijgewerkte pagina's tonen Afbeeldingen uploaden Lijst ge-uploade afbeeldingen tonen Geregistreerde gebruikers tonen Statistieken tonen Ga naar een willekeurig artikel Niet-gelinkte artikels tonen Niet-gelinkte afbeeldingen tonen Populaire artikels tonen Meest gewenste artikels tonen Korte artikels tonen Lange artikels tonen Nieuwe artikels tonen Taallinks Alle paginatitels tonen Geblokkeerde IP-adressen tonen Onderhoudspagina Boekhandels Printer-vriendelijke versie Overleg Aanmelden Help Lijst van wiskundigen Onderstaande lijst bevat een aantal bekende wiskundigen alfabetisch gerangschikt. De sortering is op achternaam. A Niels Henrik Abel (Noorwegen, Wilhelm Ackermann (Duitsland, Maria Gaetana Agnesi (Italie, Lars Valerian Ahlfors (Finland, Jean Le Rond d'Alembert (Frankrijk, Abu Ja'far Muhammad Ibn Musa Al-Khwarizmi (Perzie 780 Alexander Anderson (Schotland, 1582-1620) Andre Marie Ampere (Frankrijk

50. Neue Seite 1 Translate this page d'Alembert, Jean (17.11.1717 - 29.10.1783). dandelin, Pierre germinal (1794 - 1847).Daniell, Percy John (9.1.1889 - 25.5.1946). Danti, Egnatio (1536 - 1586). http://www.mathe-ecke.de/mathematiker.htm

Abbe, Ernst (1840 - 1909) Abel, Niels Henrik (5.8.1802 - 6.4.1829) Abraham bar Hiyya (1070 - 1130) Abraham, Max (1875 - 1922) Abu Kamil, Shuja (um 850 - um 930) Abu'l-Wafa al'Buzjani (940 - 998) Ackermann, Wilhelm (1896 - 1962) Adams, John Couch (5.6.1819 - 21.1.1892) Adams, John Frank (5.11.1930 - 7.1.1989) Adelard von Bath (1075 - 1160) Adler, August (1863 - 1923) Adrain, Robert (1775 - 1843) Aepinus, Franz Ulrich Theodosius (13.12.1724 - 10.8.1802) Agnesi, Maria (1718 - 1799) Ahlfors, Lars (1907 - 1996) Ahmed ibn Yusuf (835 - 912) Ahmes (um 1680 - um 1620 v. Chr.) Aida Yasuaki (1747 - 1817) Aiken, Howard Hathaway (1900 - 1973) Airy, George Biddell (27.7.1801 - 2.1.1892) Aithoff, David (1854 - 1934) Aitken, Alexander (1895 - 1967) Ajima, Chokuyen (1732 - 1798) Akhiezer, Naum Il'ich (1901 - 1980) al'Battani, Abu Allah (um 850 - 929) al'Biruni, Abu Arrayhan (973 - 1048) al'Chaijami (? - 1123) al'Haitam, Abu Ali (965 - 1039) al'Kashi, Ghiyath (1390 - 1450) al'Khwarizmi, Abu Abd-Allah ibn Musa (um 790 - um 850) Albanese, Giacomo (1890 - 1948) Albert von Sachsen (1316 - 8.7.1390)

51. April 12 Durham) In 1793, Ferdinand I KLJM, the Good Natured, Emperor of Austria/king ofHungary In 1794, germinal P dandelin, Belgian mathematician (geometry) In 1801 http://www.dailyalmanacs.com/almanac2/april/0412.html

On April 12... 102nd day of year with 263 days left (Numerology = 7) Happy Birthday to: In 1500, Joachim Camerarius, [Liebhard Kammerer], German humanist In 1573, Jacques BonfrŠre, Dutch bible expert In 1579, Fran‡ois de Bassompierre, marshal of France In 1626, Paul Hainlein, composer In 1692, Giuseppe Tartini, composer, Istria In 1695, Caspar Burman, historian/mayor (Utrecht Neth) In 1716, Felice de' Giardini, composer In 1722, Pietro Nardini, composer In 1724, Lyman Hall, US physician (signed Declaration of Independence) In 1727, Gaspare Gabellone, composer In 1760, Juan Manuel Olivares, composer In 1764, Dirk van den Boetzelaer, regent of Holland In 1769, Giovanni Agostino Perotti, composer In 1777, Henry Clay, [the Great Compromiser], US politician In 1788, Johann Erik Nordblom, composer In 1791, Francis Preston Blair, newspaper editor (Washington Globe) In 1792, John George Lambton, London, statesman (1st Earl of Durham) In 1793, Ferdinand I KLJM, the Good Natured, Emperor of Austria/king of Hungary In 1794, Germinal P Dandelin, Belgian mathematician (geometry)

52. Matemático: Artículo De La Enciclopedia Libre Translate this page D. Francois d'Aguillon? 1566?-1617? germinal Pierre dandelin? (Francia, Bélgica,1794?-1847?) David van Dantzig? (Holanda, 1900?-1959) George Dantzig? http://enciclopedia.us.es/wiki.phtml?title=Matemático

53. History Of Mathematics: Chronology Of Mathematicians A list of all of the important mathematicians working in a given century.Category Science Math Mathematicians Directories...... 1853); Ludwig Seeber (17931855); Michel Chasles (1793-1880) *SB *MT;germinal Pierre dandelin (1794-1847) *SB *MT; Olinde Rodrigues http://aleph0.clarku.edu/~djoyce/mathhist/chronology.html

Chronological List of Mathematicians Note: there are also a chronological lists of mathematical works and mathematics for China , and chronological lists of mathematicians for the Arabic sphere Europe Greece India , and Japan Table of Contents 1700 B.C.E. 100 B.C.E. 1 C.E. To return to this table of contents from below, just click on the years that appear in the headers. Footnotes (*MT, *MT, *RB, *W, *SB) are explained below List of Mathematicians 1700 B.C.E. Ahmes (c. 1650 B.C.E.) *MT 700 B.C.E. Baudhayana (c. 700) 600 B.C.E. Thales of Miletus (c. 630-c 550) *MT Apastamba (c. 600) Anaximander of Miletus (c. 610-c. 547) *SB Pythagoras of Samos (c. 570-c. 490) *SB *MT Anaximenes of Miletus (fl. 546) *SB Cleostratus of Tenedos (c. 520) 500 B.C.E. Katyayana (c. 500) Nabu-rimanni (c. 490) Kidinu (c. 480) Anaxagoras of Clazomenae (c. 500-c. 428) *SB *MT Zeno of Elea (c. 490-c. 430) *MT Antiphon of Rhamnos (the Sophist) (c. 480-411) *SB *MT Oenopides of Chios (c. 450?) *SB Leucippus (c. 450) *SB *MT Hippocrates of Chios (fl. c. 440) *SB Meton (c. 430) *SB

54. Site Map McMullen Gordon MacRae Jodie Rogers Jodie Sweetin Jodocus Hondius German LeontyevichZhukovsky German Titov Dom Philip Jebb germinal P dandelin Domenic Filane http://www.smartemail.info/site_map/index74.shtml

Site Map Search Results Gordon Leggat Jodie Foster Gordon Lightfoot Jodie McMullen ... Futures Trading

55. Data For April 12 Washington Globe) 1793 Ferdinand I KLJM de Goedige, Emperor of Austria/king of Hungary1794 germinal P dandelin, Belgian mathematician (geometry) 1801 Joseph http://www.vaxxine.com/mgdsite/history/0412.HTM

Presented by Greg Duncan... Welcome to Special Events in History for April 12 Back to GREGSITE Births for April 12 1500 Joachim Camerarius, [Liebhard Kammerer], German humanist 1573 Jacques Bonfrre, bible expert 1579 Fran‡ois de Bassompierre, marshal of France 1695 Caspar Burman, historian/mayor (Utrecht Neth) 1777 Henry Clay, [the Great Compromiser], US politician 1791 Francis Preston Blair, newspaper editor (Washington Globe) 1793 Ferdinand I KLJM de Goedige, Emperor of Austria/king of Hungary 1794 Germinal P Dandelin, Belgian mathematician (geometry) 1801 Joseph F K Lanner, Austria, composer/violist 1831 Constantin Meunier, Belgian painter/sculptor 1831 George Burgwyn Anderson, Brig General (Confederate Army) 1831 Grenville Mellen Dodge, Major General (Union volunteers) 1838 John Shaw Billings, US, librarian/army physician 1856 William M Conway, English historian/explorer (Spitzbergen) 1863 Raul d'Avila Pompeia, Brazilian writer (Boarding School) 1869 Henri-D‚sir‚ Landru, French sex murderer 1871 Ioannis Metaxas, Greek general/dictator (1936-41) 1878 Richard B Goldschmidt, German/US zoologist

56. ARTICULOS PUBLICADOS -MAYO 1994- dandelin Y LA GEOMETRIA SINTETICA Miguel A. Gil Saurí Dr. Ingeniero de Caminos, Canales y Puertos Si bien todo artículo científico debiera tener el máximo grado de actualidad, éste preferiría situarlo en el marco de la Historia de la Ciencia. del Coronel G.P. dandelin, cuyas aportaciones a la geometría, aún siendo of Colonel G.P. dandelin's birth, whose contributions to geometry, http://www.ciccp.es/rop/revistas/indices/1994/mayo_94.htm

G.P. DANDELIN Y LA GEOMETRIA SINTETICA Miguel A. Gil Saurí Dr. Ingeniero de Caminos, Canales y Puertos RESUMEN Si bien todo artículo científico debiera tener el máximo grado de actualidad, éste preferiría situarlo en el marco de la Historia de la Ciencia. Sin embargo, cierto es que este año-1994-celebramos el bicentenario del nacimiento del Coronel G.P. Dandelin, cuyas aportaciones a la geometría, aún siendo generalmente conocidas, es necesario analizar. ABSTRACT While any scientific article ought to be as up to date as posible, we have preferred to place this one within the framework of the History of Science. However, it is true that this year-1994-we celebrate the two hundredth anniversary of Colonel G.P. Dandelin's birth, whose contributions to geometry, although generally well-know, need to be analyzed. EL CANAL DE ENSAYOS CIEM DEL LABORATORIO DE INGENIERIA MARITIMA (LIM) DE LA ESCUELA TECNICA SUPERIOR DE INGENIEROS DE CAMINOS, CANALES Y PUERTOS DE BARCELONA Agustín Sánchez-Arcilla Dr. Ingeniero de Caminos, Canales y Puertos

57. Dandelin's Spheres (PRIME) This article presents a now classic proof, due to the French/Belgian mathematicianGerminal dandelin (1794 – 1847), which shows the equivalence of these http://www.mathacademy.com/pr/prime/articles/dandelin/index.asp

BROWSE ALPHABETICALLY LEVEL: Elementary Advanced Both INCLUDE TOPICS: Basic Math Algebra Analysis Biography Calculus Comp Sci Discrete Economics Foundations Geometry Graph Thry History Number Thry Physics Statistics Topology Trigonometry lassically, conic sections (the ellipse parabola , and hyperbola ) are defined by the intersection of a plane with a cone We take the case of an ellipse; the other cases are quite similar. As a conic section, an ellipse is the intersection of a cone and a plane whose angle to the vertical is larger than that of the generator of the cone. That is, it is the curve that results when a plane slices right through one of the nappes of the cone. In plane geometry, however, an ellipse is the locus of points in the plane, the sum of whose distances from two fixed points, called the foci, remains constant. At first glance it is not obvious that these are definitions of the same mathematical object. To show that they are, Dandelin peformed an ingenious construction. call V Now draw the two tangents to the circle that intersect at V . Then the points of tangency are equidistant from V The standard proof of this fact is straightforward, but we'll content ourselves with noticing that it follows more or less immediately from the symmetry of the situation. Indeed, if we rotate the above figure about its axis of symmetry, we get an immediate extension to the case of a sphere inscribed in a cone:

58. Mathematics Encyclopedia -- Platonic Realms dandelin’s Spheres n. A proof by the 17th century French mathematician Germinaldandelin of the equivalence of the plane geometry and conic section http://www.mathacademy.com/cgi-bin/ref_main.cgi?continuum hypothesis

59. List Of Mathematical Topics - Acapedia - Free Knowledge, For All D. d'Aguillon, Francois d'Alembert, Jean Le Rond dandelin dandelin, GerminalPierre Danielson, GC Dantzig, David van Dantzig, George Data http://acapedia.org/aca/List_of_mathematical_topics

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60. Famous Mathematicians With A D Translate this page Jean d'Alembert Thompson W. Darcy Nicole d'Oresme Leonardo da Vinci germinal DandelinEgnatio Danti David van Dantzig George Dantzig Gaston Darboux George http://www.famousmathematician.com/az/mathematician_D.htm

Mathematicians - D Jean d'Alembert Thompson W. Darcy Nicole d'Oresme Leonardo da Vinci Germinal Dandelin Egnatio Danti David van Dantzig George Dantzig Gaston Darboux George Darwin Zacharias Dase Ingrid Daubechies Harold Davenport August Davidov Evan Tom Davies Florimond de Beaune Bernard de Bessy Jacques de Billy Budan de Boislaurent Louis de Bougainville Louis duc de Broglie Pierre de Carcavi Gustave de Coriolis Charles de Coulomb Pierre de Fermat Bernard de Fontenelle Johannes de Groot Ernest de Jonquieres Charles de La Condamine Jan-Karel della Faille Philippe de La Hire Estienne de La Roche Thomas de Lagny Abraham de Moivre Pierre de Montmort Augustus de Morgan Gaspard de Prony Juan de Ortega de Rham Georges Gilles de Roberval Adhemar de St-Venant Willem de Sitter Rene de Sluze Joseph de Tilly D'Amondans de Tinseau Johan de Witt Josef de Wronski Claude Dechales Richard Dedekind Max Dehn Scipione del Ferro Richard Delamain Jean Baptiste Delambre

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