41. 501/98 Crelle´s Journal crelle´s Journal. Volume 501 (august 1998). Each article of this issue is availableto registered subscribers as PDF files. For information on registering http://www.degruyter.de/journals/crelle/crelle501.html

Volume 501 (August 1998) Each article of this issue is available to registered subscribers as PDF files. For information on registering for online access, please contact us at o-journals@deGruyter.com Volume 496 , March 1998, is freely available as an electronic sample issue. If you do not yet have the free Acrobat Reader installed on your system, please follow this link: and RAGNAR SIGURDSSON Plurisubharmonic functions and analytic discs on manifolds DANIEL MALL On holomorphic and transversely holomorphic foliations on Hopf surfaces PEKKA TUKIA Conical limit points and uniform convergence groups DAVID WRAITH Surgery on Ricci positive manifolds CHARLES P. BOYER, KRZYSZTOF GALICKI and BENJAMIN M. MANN Hypercomplex structures from 3-Sasakian structures THOMAS NEHRING Hypersurfaces of prescribed Gauss curvature and boundary in Riemannian manifolds MICHAEL STOLL CIRO CILIBERTO and RICK MIRANDA Degenerations of planar linear systems KANETOMO SATO Injectivity of the torsion cycle map of codimension two of varieties over $p$-adic fields with semi-stable reduction (VI.99)

42. Imago Mundi - August Crelle. http://www.cosmovisions.com/Crelle.htm

Les gens Crelle Journal der Baukunst (T.). Ses autres publications sont : (Goettingue,1811); (Berlin, 1820 et 1822, 2 vol.); Handbuch des Feldmessens und Nivellierens (1826) ; Lehrbuch der Elemente der Geometrie (1826-1827, 2 vol.), Rechentafeln (1812); Erleichterungs tafein fur jeden der zu rechnen hat. A B C D ... Z

43. August L Crelle, German Inventor/mathematician, 1st Prussian Railway March 27 In august L crelle, German inventor/mathematician, 1st Prussian Railway March 27,1780 in history. http://www.brainyhistory.com/events/1780/march_27_1780_43519.html

Atlas Dictionary Encyclopedia Geography ... Add "Today in History" or "Today's Birthdays" to Your Site - it's Easy! Web brainyhistory.com March 27, 1780 in History Born: August L Crelle, German inventor/mathematician, 1st Prussian Railway Related Topics: August Crelle German inventor ... railway Related Year: Related Birthdays: March 27 Additional Information: March 27 Related Countries: Russia In all chaos there is a cosmos, in all disorder a secret order. - Carl G. Jung History Home About Us Inquire Privacy Terms

44. Niels Henrik Abel where he became intimate with august Leopold crelle, who was then about to In 1829 crelle obtained a post for him at Berlin, but the offer did not http://www.nndb.com/people/908/000093629/

This is a beta version of NNDB Search: All Names Living people Dead people Band Names Book Titles Movie Titles Full Text for Niels Henrik Abel Born: 5-Aug-1802 Birthplace: Island of Finnøy, Norway Died: 6-Apr-1829 Location of death: Froland, Norway Cause of death: unspecified Gender: Male Religion: Lutheran Ethnicity: White Sexual orientation: Straight Occupation: Mathematician Level of fame: Niche Executive summary: Studied elliptics and hyperelliptics Norwegian mathematician, born at Finnøy on the 25th of August 1802. In 1815 he entered the cathedral school at Christiania, and three years later he gave proof of his mathematical genius by his brilliant solutions of the original problems proposed by Bernt Michael Holmboe. About this time, his father, a poor Protestant minister, died, and the family was left in straitened circumstances; but a small pension from the state allowed Abel to enter Christiania University in 1821. His first notable work was a proof of the impossibility of solving the quintic equation by radicals. This investigation was first published in 1824 and in abstruse and difficult form, and afterwards (1826) more elaborately in the first volume of Crelle's Journal Legendre Crelle's Journal , were edited by Holmboe and published in 1839 by the Swedish government, and a more complete edition by Ludwig Sylow and Sophus Lie was published in 1881.

45. Biography Of Niels Henrick Abel Here he met august crelle. After a struggle to find a common language betweenthe two of them they finally started to talk. crelle was so pleased with Abel, http://www.andrews.edu/~calkins/math/biograph/199899/bioabel.htm

Back to the Table of Contents Biographies of Mathematicians - Abel Abel's Early Life The Many Struggles of Abel Abel's Accomplishments "He has left mathematicians something to keep them busy for five hundred years" Neils Henrick Abel was one of the first explorers into the world of functions and discovered Abelian functions. The life of Abel is one of the most tragic in all of the sciences. Abel's Early Life On August 5, 1802 Niels Henrick Abel was born in Finnoy, Norway to a Lutheran minister. Shortly after he was born, Abel and his eight family members moved to Gjerstad, Norway. Abel was educated at home until the age of 13, which is when he was admitted to the Cathedral School in Oslo. At Oslo, his math was rather unimpressive, but when his teacher was dismissed for beating the pupils, Abel became good friends with his new instructor, Bernt Michael Holmboe. Holmboe was supportive of Abel because of Abel's ability in mathematics. Holmboe encouraged Abel with books and problems, but Abel quickly found himself teaching his instructor because of his vast amount of knowledge. Accepted to the Cathedral School at the age of 13.

46. Niels Henrik Abel -- Facts, Info, And Encyclopedia Article where he became well acquainted with august Leopold crelle, who was then about to In early April 1829 crelle obtained a post for him in Berlin, http://www.absoluteastronomy.com/encyclopedia/n/ni/niels_henrik_abel.htm

Niels Henrik Abel [Categories: Group theorists, Norwegian mathematicians, 1829 deaths, 1802 births] Niels Henrik Abel (A Scandinavian language that is spoken in Norway) Norwegian (A person skilled in mathematics) mathematician , was born in (Click link for more info and facts about Finnøy) Finnøy . In 1815 he entered the cathedral school at Christiania (as (The capital and largest city of Norway; the country's main port; located at the head of a fjord on Norway's southern coast) Oslo was then called), and three years later he gave proof of his mathematical genius by his brilliant solutions of the original problems proposed by Bernt Holmboe. About this time, his father, a poor Protestant minister, died, and the family was left in straitened circumstances; but a small pension from the state allowed Abel to enter Christiania University in 1821. Abel's first notable work was a proof of the impossibility of solving the (Click link for more info and facts about quintic equation) quintic equation by radicals (see (Click link for more info and facts about Abel-Ruffini theorem) Abel-Ruffini theorem .) This investigation was first published in 1824 in abstruse and difficult form, and afterwards (1826) more elaborately in the first volume of

47. 10.1. Abel, Niels (1802-1829) Here he met august Leopold crelle, an influential engineer and amateur mathematicianwho was pondering the creation of a journal dedicated to new http://www.shu.edu/projects/reals/history/abel.html

10.1. Abel, Niels (1802-1829) IRA Niels Abel was one of the innovators in the field of elliptic functions, discoverer of Abelian functions and one of the leaders in the use of rigor in mathematics. His work was so revolutionary that one mathematician stated: "He has left mathematicians something to keep them busy for five hundred years." However, his life did not mirror his mathematical success and his story is one of the most tragic in the sciences. Abel's first main contribution to mathematics came before entering college. For hundreds of years, mathematicians had searched in vain to discover the general solution for the quintic equation a x + b x + c x + d x + e x + f = . Abel developed what he thought was the answer. Holmboe and Hansteen knew there was no one in Norway with the ability to understand if the answer was correct, so they sent the paper to the mathematician Ferdinand Degen in Denmark. Before receiving an answer, Abel discovered a mistake in his figures and questioned if there was an answer. Taking the tract that there was not, he eventually proved that an algebraic solution to the quintic equation was impossible. More important, however, Degen suggested that Abel take up the subject of elliptic integrals, which would become the focus of his work and the source of his fame. Before entering the University of Oslo in 1821, Abel's father died, leaving his son to support his mother and six siblings. Unable to meet his financial needs, he relied on grants from the university, gifts from his math professors and tutoring positions to keep his family afloat. However, his mathematics flourished. After fulfilling the requirements for graduation in one year, he was left on his own to study. In 1823, he published his first important paper on definite integrals, which included the first ever solutions of an integral equation. He also produced another valuable work on the integration of functions. Both of these works would have brought him instant renown and a professorship if anyone would have read them. Unfortunately, the works were written in Norwegian while the leading mathematicians of Europe wrote in French and German. The papers were ignored.

48. AIP International Catalog Of Sources Papers, 18271855. by crelle, AL (august Leopold), 1780-1855. Contains mathematicalmanuscripts submitted to crelle s Journal on Pure and Applied http://www.aip.org/history/catalog/2498.html

If you are not immediately redirected, please click here My List - Help Browse Archival Resources Archival Finding Aids Books Photos Browse FAQs Past Searches History Home Search: Author Subject Title Journal/Newspaper Title Series Computer File (Software) Title Video Title Refine Search AIP Niels Bohr Library Item Information Holdings More by this author Crelle, A. L. (August Leopold), 1780-1855. Subjects Mathematics Publishing 19th century. Scholarly periodicals Germany. Browse Catalog by author: Crelle, A. L. (August Leopold), 1780-1855. by title: Papers, 1827-1855.... MARC Display Papers, 1827-1855. by Crelle, A. L. (August Leopold), 1780-1855. Description: 14 boxes. Owning Repository: Country of Repository: Germany Biography/History: Scope of Material: Contains mathematical manuscripts submitted to Crelle's Journal on Pure and Applied Mathematics; several letters. Provenance: Purchased, 1868, from bookdealer Asher. Arrangement of Records: Chronological. Notes: In German. Purchased, 1868, from bookdealer Asher. Finding Aid: Finding aid available. Added Author: AIP-ICOS Occupation Term(s): Mathematicians.

49. Crelle Today is august Leopold crelle s Birthday! Happy Birthday crelle! We applaud yourcontributions in establishing the first mathematics research journal, http://curvebank.calstatela.edu/birthdayindex/mar/mar11crelle/mar11crelle.htm

Close Window Today is August Leopold Crelle's Birthday! Happy Birthday Crelle! We applaud your contributions in establishing the first mathematics research journal, or simply, Crelle's Journal, in 1826. Born: March 11, 1780 in Eichwerden, Germany Died: October 6, 1855 in Berlin, Germany

50. Arrhenius, Svante August --  Britannica Student Encyclopedia august Leopold crelle University of St. Andrews, Scotland Short biography of thisGermanborn mathematician and engineer who advanced the work and careers http://www.britannica.com/ebi/article-9316571

Home Browse Newsletters Store ... Subscribe Already a member? Log in This Article's Table of Contents Arrhenius, Svante August Print this Table of Contents Shopping Price: USD $1495 Revised, updated, and still unrivaled. The Official Scrabble Players Dictionary (Hardcover) Price: USD $15.95 The Scrabble player's bible on sale! Save 30%. Merriam-Webster's Collegiate Dictionary Price: USD $19.95 Save big on America's best-selling dictionary. Discounted 38%! More Britannica products Arrhenius, Svante August  Student Encyclopedia Article Page 1 of 1 var mm = [["Jan.","January"],["Feb.","February"],["Mar.","March"],["Apr.","April"],["May","May"],["June","June"],["July","July"],["Aug.","August"],["Sept.","September"],["Oct.","October"],["Nov.","November"],["Dec.","December"]]; To cite this page: MLA style: "Arrhenius, Svante August." Britannica Student Encyclopedia http://www.britannica.com/ebi/article-9316571 APA style: Arrhenius, Svante August. ( Britannica Student Encyclopedia . Retrieved http://www.britannica.com/ebi/article-9316571

51. Steiner, Jakob --  Britannica Student Encyclopedia crelle, august Leopold German mathematician and engineer who advanced the workand careers of many young mathematicians of his day and founded the Journal http://www.britannica.com/ebi/article-9277224

Home Browse Newsletters Store ... Subscribe Already a member? Log in This Article's Table of Contents Jakob Steiner Print this Table of Contents Shopping Price: USD $1495 Revised, updated, and still unrivaled. The Official Scrabble Players Dictionary (Hardcover) Price: USD $15.95 The Scrabble player's bible on sale! Save 30%. Merriam-Webster's Collegiate Dictionary Price: USD $19.95 Save big on America's best-selling dictionary. Discounted 38%! More Britannica products Steiner, Jakob  Student Encyclopedia Article Page 1 of 1 Jakob Steiner Algebra Calculus Steiner, Jakob... (75 of 226 words) var mm = [["Jan.","January"],["Feb.","February"],["Mar.","March"],["Apr.","April"],["May","May"],["June","June"],["July","July"],["Aug.","August"],["Sept.","September"],["Oct.","October"],["Nov.","November"],["Dec.","December"]]; To cite this page: MLA style: "Steiner, Jakob." Britannica Student Encyclopedia http://www.britannica.com/ebi/article-9277224

52. J : Papers The German engineer and mathematician august Leopold crelle lived from 1780 to 1855.He made many minor contributions to mathematics, but is generally much http://www.jsoftware.com/papers/play131.htm

Jsoftware Google Site Search Home Forum ... Papers At Play With J Riding a Unicycle Eugene McDonnell Eemcd@aol.com This article deals with two topics dealing with permutations having a single cycle, which can be called unicycles. The first arises from a recent Internet inquiry, and the second resuscitates an obscure mathematician from two centuries ago to give him credit for having invented list processing. We might ask how many unicycles there are for permutations of a given length. This number can be found by the use of Stirling numbers of the first kind, which came about precisely from a need to count the number of ways to arrange n objects into k cycles. In their APL95 paper, Representations of Recursion, Roger Hui and Ken Iverson give an efficient way to generate the table of values for these Stirling numbers for cycles: As you can see, the number of ways that n objects can be arranged in a unicycle is !n-1. I. The Bernecky Problem Bob Bernecky, of Snake Island Research, in Toronto, sent a message on the Internet recently asking for help in deriving from the sequence of link fields in a linked list of records the permutation which would put the records into order. That is, suppose the records looked like this: No. Name Link Bee 6 1 Zee 2 Que 8 3 Gee 5 4 Pea 2 (A) 5 Jay 9 6 Dee 3 7 Vee 1 8 Tea 7 9 Key 4

53. March 11 - Today In Science History (1855) in the motion in the perihelion of Mercury. august Leopold crelle crelle advanced the work and careers of many young mathematicians of his http://www.todayinsci.com/3/3_11.htm

Visit our new gallery of Perpetual Motion Machines through the centuries MARCH 11 - BIRTHS Nicolaas Bloembergen (source) Born 11 Mar 1920 Dutch-born American physicist studies of the interaction of electromagnetic radiation with matter. Bloembergen made a pioneering use of lasers in these investigations and developed three-level pumps used in both masers and lasers. Vannevar Bush (source) Born 11 Mar 1890; died 28 Jun 1974. American electrical engineer and administrator who and oversaw government mobilization of scientific research during World War II. At the age of 35, in 1925, he developed the differential analyzer, the world's first analog computer. It was capable of solving differential equations. He put into concrete form that which began 50 years earlier with the incomplete efforts of Babbage, and the theoretical details developed by Kelvin. This machine filled a 20 x 30 foot room. He innovated one of the largest growing media in our time, namely hypermedia as fulfilled in the Internet with hypertext links. Joseph Bertrand (source) Born 11 Mar 1822; died 5 Apr 1900.

54. A BIOGRAFI In Berlin he met august Leopold crelle. crelle started to publish a august Leopold crelle (17801855). crelle was a German mathematician and http://home.c2i.net/greaker/comenius/prepare/9798/Abel_1.htm

A BIOGRAFI NIELS HENRIK ABEL Written by Maria Moksnes and Katrine Sandnes. Abel was born 5, August 1812 in Finnøy in Ryfylke. He moved with his family to Gjerstad in Aust - Agder, when he was two years old. Abel was second oldest out of 6 children. His father Søren Georg Abel had a drinking problem, and he died when Abel was only 18 years old. Also his mother Marie Sørensen was a alcoholic, and the children and she had big economical problems after the fathers death. Abel got a scolarship on the Katedralscool in Oslo, when he was 13 years old. Mathematic was his best subject from the start, but when he got Holmboe (*) as a new mathematical teacher big things started to happen. Holmboe became a great inpirationsourse to Abel, and he was well known for his interesting teaching. He also lent Abelbooks in higher mathematics, and guided him to work with works of well known mathematicians. In 1821 he started to study at the Universety in Oslo. He had economical problems, but got to live at the dorm "Regensen" for free. In 1823, Abel published his first important paper on definite integrals, which included the first solutions of an integral equation. He also produced another valuable work of the intergration of functions. The same year Abel had his first trip to Copenhagen. In Denmark he worked with the solution of the theorem of the elliptic functions. Abel also got to travel to Europe in 1825 -1827. In Berlin he met August Leopold Crelle. Crelle started to publish a mathematical paper, were Abel got 6 of his mathematical works published. When Abel got to Paris he presented his new "masterpiece" on elliptic functions and integrals which included Abels theorem, to the French Academy of Sciences.

55. Karl Gustav Jacob Jacobi's WEB Page august Leopold crelle (17801855). crelle was a civil engineer who published muchof Abel s and Jacobi s early work, including work on elliptic functions in http://www.math.ohio-state.edu/~econrad/Jacobi/Jacobi.html

Karl Gustav Jacob Jacobi This page is not being actively maintained, but I will try to make small changes as I find time. The translations on this site date to my graduate student days, when I was first learning about elliptic functions. Incidentally, the translations came directly from the versions published in Crelle's Journal, and not from Jacobi's Collected Works. (The Collected Works weren't readily available to me at the time.) It shouldn't be difficult to find errors in these translations I would certainly appreciate hearing about any that you find. Enjoy, Eric This page was last modified on: Fri Aug 1 11:51:33 EDT 2003 by Eric Conrad. Mail comments to ( econrad@math.ohio-state.edu ). Please let me know if there is some Jacobi or elliptic functions material on the net which I should add to this site. A biography of Carl Gustav Jacob Jacobi (1804-1851) . (MacTutor web site) Also on the MacTutor site: Niels Abel (1802-1829) . Abel discovered inversion of elliptic integrals shortly before Jacobi. Adrien-Marie Legendre (1752-1833) . Legendre was mentor to both Abel and Jacobi. August Leopold Crelle (1780-1855) . Crelle was a civil engineer who published much of Abel's and Jacobi's early work, including work on elliptic functions in his new mathematical journal. His journal, officially titled

56. Niels Henrik Abel Abel Was A Norwegian Mathematician Who Died Of While in Berlin he met august Leopold crelle who was just starting his journalJournal fur die Reine und Angewandte Mathematik (often known as crelle s http://www.math.wfu.edu/~kuz/Stamps/Abel/Abel.html

Niels Henrik Abel Abel was a Norwegian mathematician who died of tuberculosis at the age of 26. Always a victim of poverty, he received his university schooling largely through the generosity of friends and professors who recognized his genius. He never received an official position in Norway other than a fellowship to spend a year at the mathematical centers of Europe. While in Berlin he met August Leopold Crelle who was just starting his journal Journal fur die Reine und Angewandte Mathematik (often known as Crelle's Journal ), which was one of the earliest mathematics journals. Crelle quickly recognized Abel's abilities and became his friend and supporter. The first volume of Crelle's Journal contained seven papers by Abel and the first three volumes contained twenty-two. Abel also went to Paris and submitted what he considered to be his greatest paper, "Memoire sur une Propriete Generale d'une Classe Tres Etendue des Fonctions Transcendantes" to the Academy of Sciences; unfortunately, the referee, Cauchy , lost the paper delaying its publication for fifteen years (Cauchy also lost a paper of Galois ). In addition to his work in analysis Abel showed the impossibility of solution of the general quintic polynomial by radicals. Although his life was short, Abel's contributions are memorialized in mathematics with many named theorems and concepts: Abelian groups, Abel integrals and functions, Abel's series, and Abel's summation formula to name a few. Norway has remembered Abel not only on stamps, but also with an official statue in Oslo; for some reason the sculptor chose to portray Abel in the nude (draped); it appears on the stamp below.

57. PianoRama crelle, august. 17801856 German civil engineer and mathematician. Bees. . .by virtue of a certain geometrical forethought . . . know that the hexagon is http://www.pianorama.org/gallery.html

Bezoek de Galerie There is geometry in the humming of the strings. There is music in the spacing of the spheres. Pythagoras. ca.560-ca.480 BC. Greek philosopher and mathematician In our times, geometers are still exploring those new Wonderlands, partly for the sake of their applications to cosmology and other branches of science, but much more for the sheer joy of passing through the looking glass into a land where the familiar lines, planes, triangles, circles and spheres are seen to behave in strange but precisely determined ways. H.S.M. Coxeter. 1907-2003. The twentieth century's preeminent classical geometer and mathematician of polyhedra Whoever... proves his point and demonstrates the prime truth geometrically should be believed by all the world, for there we are captured. Dürer, Albrecht. 1471-1528. German artist. It is indeed wonderful that so simple a figure as the triangle is so inexhaustible in properties. How many as yet unknown properties of other figures may there not be?" Crelle, August. 1780-1856 German civil engineer and mathematician.

58. Monuments On Mathematicians / Plaque And Street-sign In Berlin-Schöneberg Translate this page Commemorative plaque for august Leopold crelle in Berlin (Germany) deutsch augustLeopold crelle wohnte seine letzten 15 Jahre in der Potsdamer Straße http://www.w-volk.de/museum/plaque02.htm

Commemorative plaque for August Leopold Crelle in Berlin (Germany) August Leopold Crelle Gedenkstein in Eichwerder - ist A. L. Crelle auch als Mathematiker ausgewiesen. Im Jahre 1988 hat die Deutsche Bundespost eine Briefmarke August Leopold Crelle Here lived from 1840 up to 1855 August Leopold Crelle road-building and railway engineer, government surveyor and member of the academy of sciences. The railway Berlin-Potsdam was designed by him. It starts its services in 1838 as the first railway in Prussia. The photograph of the plaque is from June 2003. Moreover a street nearby is named after him. It's some kind of tradition, that streets-signs for streets, which are named after some individuals, also provide some details (cf. on the left above). Here, as well as on the memorial stone in Eichwerder , A. L. Crelle is also identified as a mathematician. In 1988 the Deutsche Bundespost issued a stamp related to the occasion of the 150 anniversary of starting the rail services mentioned on the plaque above. Back to the main page Created by W. Volk in October 2002

59. Monuments On Mathematicians / Memorial Stone For A. L. Crelle Translate this page Gedenkstein zur Erinnerung an august crelle in Eichwerder (Deutschland)/ November 2000 in Eichwerder dem Geburtsort von august Leopold crelle feierlich http://www.w-volk.de/museum/memori01.htm

Gedenkstein zur Erinnerung an August Crelle in Eichwerder (Deutschland) / Memorial stone for August Crelle in Eichwerder (Germany) Der oben im Bild wiedergegebene Gedenkstein wurde am 18. November 2000 in Eichwerder, dem Geburtsort von August Leopold Crelle (1780 - 1855) hat durch die Entwicklung des deutschen erscheinenden Mathematik" weltweit hohe Anerkennung gefunden. Die Festansprache hielt Herr Prof. Peter J. Roquette Literaturverzeichnis von Prof. Roquette zu finden. Wriezen The memorial stone shown above has been unveiled on November 18 th , 2000 in the village Eichwerder the place of birth of August Leopold Crelle . The letter of invitation by the mayor of the city of Wriezen (where Eichwerder is a part of) contains the following information (which is now tried to translate in English, improvements are welcome): The mathematician and prussian government surveyor Crelle (1780 - 1855) has been appreciated worldwide due his contributions to developing the german railway- and road network, promoter of outstanding scientists and founding the "Journal of pure and applied mathematics" which is published up to nowadays.

60. Journal Für Die Reine Und Angewandte Mathematik Commonly called crelle s Journal, the Journal für die reine und angewandteMathematik was first published in 1826 in Berlin by mathematician august crelle, http://www.math.dartmouth.edu/~euler/publications/journals/Crelle.html

(Journal of Pure and Applied Mathematics) Commonly called Crelle's Journal , the was first published in 1826 in Berlin by mathematician August Crelle, who remained editor until his death in 1855. The Journal was the first mathematics periodical of its kind, and is still published today. Crelle's Journal is unique in the history of mathematics in that it was published without any connection to an academy or scientific society. As such, it included work done by a broader range of people, not just those affiliated with a particular institution. Moreover, there was no need to include proceedings of any such institution; it was devoted entirely to the broadest possible contribution of knowledge to the academic world. One of Euler's works appears in Crelle's Journal , and one in the Archiv der reine und angewandte Mathematik Archive of Pure and Applied Mathematics ), as shown below: Leonhardi Euleri commentatio de matheseos sublimioris utilitate Archiv der reine und angewandte Mathematik Von dem Drucke eines mit einem Gewuchte beschwerten Tisches auf einer Flache. Aus den Papieren des sel. Leonhard Euler gozogen von Jakob Bernoulli

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