1. Arabisk Manuskript Af Ibn Sinan Matematisk manuskript på arabisk En side fra behandlingen af parabler hos ibrahim ibn sinan (900tallet) efter en afskrift fra omkring 1700. Fra J. L. Berggren Episodes in the Mathematics of Medieval Islam, Springer-Verlag 1986, p. 22. http://www.math.ku.dk/~ramskov/3MH-F02/forelaes/uge04/arabisk.htm

Matematisk manuskript på arabisk En side fra behandlingen af parabler hos Ibrahim ibn Sinan (900-tallet) efter en afskrift fra omkring 1700. Fra: J. L. Berggren: Episodes in the Mathematics of Medieval Islam , Springer-Verlag 1986, p. 22.

2. Sinan le fils de Thabit ibn Qurra et le père de ibrahim ibn sinan . Bien que sinan était extrêmement éminent en médecine http://www.multimania.com/alkashi/sinan.htm

Sinan ibn Thabit ibn Qurra Abu Said Sinan ibn Thabit ibn Qurra né en 880 environ, mort en 943 à Bagdad, (en Iraq) Sinan ibn Thabit ibn Qurra était le fils de Thabit ibn Qurra et le père de Ibrahim ibn Sinan . Bien que Sinan était extrêmement éminent en médecine ses contributions aux mathématiques étaient moins importantes mais il mérite une place dans cet archive par ses contributions aux mathématiques dans cette remarquable famille de savants. Thabit ibn Qurra , le père de Sinan , était un membre de la secte Sabienne (à Harran )qui vénérait les étoiles. Bien sur son père était motivé par l'étude de l'astronomie et la secte avait produit beaucoup d'astronomes et mathématiciens de qualité comme Thabit lui même. Sinan s'était formé en médecine, une discipline qui avec son père avaient étudié à Bagdad. Le patron de son père était le Calife, Al-Mu'tadid , un des plus grands califes Abbassit , et Sinan avait grandit dans la court où son père était astronome. Le père de Sinan, Thabit mourut en 901 le calife Al-Mu'tadid mourut l'année suivante.

3. History Of Islamic Science 1 alRazi, Thabit ibn Qurra, al-Battani, Hunain ibn Ishaq, al-Farabi, ibrahim ibn sinan, al-Masudi, al-Tabari, Abul http://www.levity.com/alchemy/islam12.html

History of Islamic Science Based on the book Introduction to the History of Science by George Sarton (provided with photos and portraits) Edited and prepared by Prof. Hamed A. Ead These pages are edited by Prof. Hamed Abdel-reheem Ead, Professor of Chemistry at the Faculty of Science -University of Cairo, Giza, Egypt and director of the Science Heritage Center E-mail: ead@frcu.eun.eg Web site: http://www.frcu.eun.eg/www/universities/html/shc/index.htm Back to Islamic Alchemy Back to reference library George Sarton's Tribute to Muslim Scientists in the "Introduction to the History of Science," "It will suffice here to evoke a few glorious names without contemporary equivalents in the West: Jabir ibn Haiyan, al-Kindi, al-Khwarizmi, al-Fargani, al-Razi, Thabit ibn Qurra, al-Battani, Hunain ibn Ishaq, al-Farabi, Ibrahim ibn Sinan, al-Masudi, al-Tabari, Abul Wafa, 'Ali ibn Abbas, Abul Qasim, Ibn al-Jazzar, al-Biruni, Ibn Sina, Ibn Yunus, al-Kashi, Ibn al-Haitham, 'Ali Ibn 'Isa al-Ghazali, al-zarqab, Omar Khayyam. A magnificent array of names which it would not be difficult to extend. If anyone tells you that the Middle Ages were scientifically sterile, just quote these men to him, all of whom flourished within a short period, 750 to 1100 A.D." Preface On 8 June, A.D. 632, the Prophet Mohammed (Peace and Prayers be upon Him) died, having accomplished the marvelous task of uniting the tribes of Arabia into a homogeneous and powerful nation.

4. Ibrahim ibrahim ibn sinan ibn Thabit ibn Qurra. ibrahim ibn sinan was a grandson of Thabitibn Qurra and studied geometry and in particular tangents to circles. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Ibrahim.html

Ibrahim ibn Sinan ibn Thabit ibn Qurra Born: 908 in Baghdad, (now in Iraq) Died: 946 in Baghdad, (now in Iraq) Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Ibrahim ibn Sinan was a grandson of Thabit ibn Qurra and studied geometry and in particular tangents to circles. He also studied the apparent motion of the Sun and the geometry of shadows. There is no doubt that had he not died at the young age of thirty-eight, he would have achieved a degree of fame for his mathematical works going even beyond the opinion of Sezgin (see [5] and [6]) that he was:- ... one of the most important mathematicians in the medieval Islamic world. Perhaps his early death robbed him of the chance to make a contribution even more important than that of his famous grandfather. Ibrahim's most important work was on the quadrature of the parabola where he introduced a method of integration more general than that of Archimedes . His grandfather Thabit ibn Qurra had started to view integration in a different way to Archimedes but Ibrahim realised that al-Mahani had made improvements on what his father had achieved. To Ibrahim it was unacceptable that (see for example [1]):-

5. Ibrahim Biography of ibrahim ibn sinan (908946) ibrahim ibn sinan ibn Thabit ibn Qurra http://www-history.mcs.st-and.ac.uk/history/Mathematicians/Ibrahim.html

Ibrahim ibn Sinan ibn Thabit ibn Qurra Born: 908 in Baghdad, (now in Iraq) Died: 946 in Baghdad, (now in Iraq) Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Ibrahim ibn Sinan was a grandson of Thabit ibn Qurra and studied geometry and in particular tangents to circles. He also studied the apparent motion of the Sun and the geometry of shadows. There is no doubt that had he not died at the young age of thirty-eight, he would have achieved a degree of fame for his mathematical works going even beyond the opinion of Sezgin (see [5] and [6]) that he was:- ... one of the most important mathematicians in the medieval Islamic world. Perhaps his early death robbed him of the chance to make a contribution even more important than that of his famous grandfather. Ibrahim's most important work was on the quadrature of the parabola where he introduced a method of integration more general than that of Archimedes . His grandfather Thabit ibn Qurra had started to view integration in a different way to Archimedes but Ibrahim realised that al-Mahani had made improvements on what his father had achieved. To Ibrahim it was unacceptable that (see for example [1]):-

6. Sinan sinan ibn Thabit ibn Qurra was the son of Thabit ibn Qurra and the fatherof ibrahim ibn sinan. Although sinan was extremely eminent http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Sinan.html

Abu Said Sinan ibn Thabit ibn Qurra Born: about 880 Died: 943 in Baghdad, (now in Iraq) Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Sinan ibn Thabit ibn Qurra was the son of Thabit ibn Qurra and the father of Ibrahim ibn Sinan . Although Sinan was extremely eminent in medicine his contributions to mathematics were somewhat less major but he still deserves a place in this archive as a contributor to mathematics in this remarkable family of scholars. Thabit ibn Qurra , Sinan's father, was a member of the Sabian sect. The Sabian religious sect were star worshippers from Harran. Of course being worshipers of the stars meant that there was strong motivation for the study of astronomy and the sect produced many quality astronomers and mathematicians such as Thabit himself. Sinan was trained in medicine, a topic which his father had studied in Baghdad. His father's patron was the Caliph, al-Mu'tadid, one of the greatest of the 'Abbasid caliphs, and Sinan was brought up at the court where his father held the role of court astronomer. Sinan's father Thabit died in 901 and the caliph al-Mu'tadid died the following year. Al-Mu'tadid had shown great skill in playing the various factions off against each other during his period of power but after his troops were defeated by the Qarmatians, a schismatic sect and political movement. Historians argue whether al-Mu'tadid was poisoned in a palace intrigue, but even if he was not this is an indication of the atmosphere in the court where Sinan lived. By this time Sinan was a man of about 22 years of age but, despite having great medical skills, he seems to have held no positions at this time.

7. Ibrahim ibrahim ibn sinan ibn Thabit ibn Qurra. ibrahim ibn sinan ibn Thabit ibn Qurra( né en 908 à Bagdad , mort en 946 à http://www.multimania.com/alkashi/ibrahim.htm

Ibrahim ibn Sinan ibn Thabit ibn Qurra Ibrahim ibn Sinan ibn Thabit ibn Qurra( né en 908 à Bagdad mort en 946 à Bagdad, (Iraq) Ibrahim ibn Sinan était un petit fils de Thabit ibn Qurra , il avait étudié la géométrie et en particulier les tangentes aux cercles. Il avait aussi étudié le mouvement apparent du Soleil et la géométrie des ombres. Il n'y a aucun doute qu'il n'était pas au jeune âge de trente-huit, il devait atteindre un degré gloire pour ses travaux mathématiques selon l'opinion de Sezgin qu'il était: ... un des plus importants mathématiciens dans le monde Islamique médiéval. Peut-être sa mort précoce lui avait volé la chance de faire une contribution plus importante que celle de son célèbre grand-père. Le plus important travail de Ibrahim était sur la quadrature de la parabole où il introduisit une méthode d'intégration plus général que celle faite par Archimède Son grand-père Thabit ibn Qurra avait commencé à examiner l'intégration en une différente façon de celle d' Archimède mais Ibrahim s'était rendu compte que Al-Mahani avait fait des améliorations sur ce que son grand-père avait réalisé. Pour Ibrahim ce ci est inacceptable:

8. Ibrahim Translate this page ibrahim ibn sinan ibn Thabit ibn Qurra. ibrahim ibn sinan ibn Thabitibn Qurra(né en 908 à Bagdad, mort en 946 à Bagdad, (Iraq)). http://membres.tripod.fr/alkashi/ibrahim.htm

Ibrahim ibn Sinan ibn Thabit ibn Qurra Ibrahim ibn Sinan ibn Thabit ibn Qurra( né en 908 à Bagdad mort en 946 à Bagdad, (Iraq) Ibrahim ibn Sinan était un petit fils de Thabit ibn Qurra , il avait étudié la géométrie et en particulier les tangentes aux cercles. Il avait aussi étudié le mouvement apparent du Soleil et la géométrie des ombres. Il n'y a aucun doute qu'il n'était pas au jeune âge de trente-huit, il devait atteindre un degré gloire pour ses travaux mathématiques selon l'opinion de Sezgin qu'il était: ... un des plus importants mathématiciens dans le monde Islamique médiéval. Peut-être sa mort précoce lui avait volé la chance de faire une contribution plus importante que celle de son célèbre grand-père. Le plus important travail de Ibrahim était sur la quadrature de la parabole où il introduisit une méthode d'intégration plus général que celle faite par Archimède Son grand-père Thabit ibn Qurra avait commencé à examiner l'intégration en une différente façon de celle d' Archimède mais Ibrahim s'était rendu compte que Al-Mahani avait fait des améliorations sur ce que son grand-père avait réalisé. Pour Ibrahim ce ci est inacceptable:

9. Sinan Biography of sinan ibn Thabit ibn Qurra (880943) was the son of Thabit ibn Qurra and the father of ibrahim ibn sinan. Although sinan was extremely eminent in medicine http://www-history.mcs.st-and.ac.uk/history/Mathematicians/Sinan.html

Abu Said Sinan ibn Thabit ibn Qurra Born: about 880 Died: 943 in Baghdad, (now in Iraq) Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Sinan ibn Thabit ibn Qurra was the son of Thabit ibn Qurra and the father of Ibrahim ibn Sinan . Although Sinan was extremely eminent in medicine his contributions to mathematics were somewhat less major but he still deserves a place in this archive as a contributor to mathematics in this remarkable family of scholars. Thabit ibn Qurra , Sinan's father, was a member of the Sabian sect. The Sabian religious sect were star worshippers from Harran. Of course being worshipers of the stars meant that there was strong motivation for the study of astronomy and the sect produced many quality astronomers and mathematicians such as Thabit himself. Sinan was trained in medicine, a topic which his father had studied in Baghdad. His father's patron was the Caliph, al-Mu'tadid, one of the greatest of the 'Abbasid caliphs, and Sinan was brought up at the court where his father held the role of court astronomer. Sinan's father Thabit died in 901 and the caliph al-Mu'tadid died the following year. Al-Mu'tadid had shown great skill in playing the various factions off against each other during his period of power but after his troops were defeated by the Qarmatians, a schismatic sect and political movement. Historians argue whether al-Mu'tadid was poisoned in a palace intrigue, but even if he was not this is an indication of the atmosphere in the court where Sinan lived. By this time Sinan was a man of about 22 years of age but, despite having great medical skills, he seems to have held no positions at this time.

10. Thabit Translate this page Son fils, sinan ibn Thabit, et son petit fils ibrahim ibn sinan ibn Thabit, lesdeux étaient des brillants savants qui avaient contribué au développement http://membres.tripod.fr/alkashi/thabit.htm

THABIT IBN QURRA Al-Sabi Thabit ibn Qurra al-Harrani né en 826 à Harran, Mésopotamie (Turquie), mort le 18 Fev 901 à Bagdad, (en Iraq) Thabit ibn Qurra était né à Harran et était membre de la secte Sabienne qui vénérait les étoiles. Bien sur cela veut dire qu'il avait une grande motivation pour l'étude de l'astronomie et la secte avait produit beaucoup d'astronomes et mathématiciens. La secte, avec des solides relations avec les Grecs, avait adopté en premier temps la culture Grecque, et il était courant pour les membres de parler le Grec , après la conquête des Sabiens par l'Islam, ils commençaient à parler l'Arabe. Il y avait une autre langue parlée dans le sud-est de la Turquie, à savoir le Syriaque qui était la langue de la région natale de Thabit ibn Qurra , il était influencé par le Grec et l'Arabe. Quelques comptes-rendus disent que Thabit était échangeur d'argents quand il était jeune. Ce ci est plutôt possible mais quelques historiens ne sont pas d'accord. Certainement il avait hérité une grande fortune de sa famille et devait être issu d'une importante famille. Muhammad ibn Moussa ibn Shakir , qui avait visité Harran, était impressionné par le savoir de Thabit sur les langues en réalisant le potentiel du jeune homme, le persuada d'aller à Bagdad, il lui apprenait des leçons de mathématiques avec ses frères (frères Bani moussa A Bagdad Thabit recevait une formation en mathématique et en médecine, qui était courant pour les savants en ce temps. Il retourna à Harran mais sa philosophie libérale le conduisit à comparaître devant la court religieuseil devait abjurer ses ' hérésies '. Pour échapper aux persécutions il quitta Harran et avait été nommé astronome à la Court à Bagdad sous les ordres du Calife

11. Biography-center - Letter I Mathematicians/Ahmed.html; ibrahim, ibn sinan wwwhistory.mcs.st-and.ac.uk/~history/Mathematicians/ibrahim.html;ibrahim, Murad Jussuf http://www.biography-center.com/i.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 I 51 biographies ibn al-Banna, www-history.mcs.st-and.ac.uk/~history/Mathematicians/Al-Banna.html ibn Ishaq Hunayn, www-history.mcs.st-and.ac.uk/~history/Mathematicians/Hunayn.html ibn Sina, www-history.mcs.st-and.ac.uk/~history/Mathematicians/Avicenna.html ibn Tahir, www-history.mcs.st-and.ac.uk/~history/Mathematicians/Al-Baghdadi.html ibn Tibbon, Jacob www-history.mcs.st-and.ac.uk/~history/Mathematicians/Tibbon.html ibn Yusuf Ahmed, www-history.mcs.st-and.ac.uk/~history/Mathematicians/Ahmed.html Ibrahim, ibn Sinan www-history.mcs.st-and.ac.uk/~history/Mathematicians/Ibrahim.html Ibrahim, Murad Jussuf Bey www.whonamedit.com/doctor.cfm/1518.html Ibsen, Henrik www.kirjasto.sci.fi/ibsen.htm Ickx, Jacky www.grandprix.com/gpe/drv-ickjac.html Iglesia, Pablo

12. IJ Index ibn Sina (Avicenna) (1965*). ibn sinan, ibrahim (688). ibn Tahir (947). ibn Tibbon, Jacob (198). ibn Yunus, Abu'lHasan http://www-groups.dcs.st-and.ac.uk/~history/Indexes/IJ.html

Names beginning with I or J The number of words in the biography is given in brackets. A * indicates that there is a portrait. ibn al-Banna ibn Iraq , Mansur (1190) ibn Ishaq Hunayn (780) ibn Qurra , Thabit (1507*) ibn Sina (Avicenna) (1965*) ibn Sinan , Ibrahim (688) ibn Tahir ibn Tibbon , Jacob (198) ibn Yunus , Abu'l-Hasan (1312) ibn Yusuf Ahmed (660) Ibrahim , ibn Sinan (688) Ingham , Albert (539*) Ito , Kiyosi (1545*) Iraq , Mansur ibn (1190) Ivory , James (245) Iwasawa , Kenkichi (1331*) Iyanaga , Skokichi (1132*) Jabir ibn Aflah Jacobi , Carl (2614*) Jacobson , Nathan (453*) Jafar , Abu al-Khazin (1148) Jagannatha , Samrat (406) James , Ioan (773*) Jamshid , al-Kashi (1725*) Janiszewski , Zygmunt (1645*) Janovskaja , Sof'ja (183*) Jarnik , Vojtech (468*) Jawhari , al-Abbas al (627) Jayyani , Abu al (892) Jeans , Sir James (2242*) Jeffrey , George (373*) Jeffreys , Sir Harold (734*) Jensen , Johan (539*) Jerrard , George (245) Jevons , William (1771*) Joachimsthal , Ferdinand (368*) John , Fritz (1077*) John of Holywood Johnson, Anna (Wheeler) (504*) Johnson, Barry

13. History 935 B.C. 935 BC At the age of twentyseven, ibrahim ibn sinan, was the onlyknown mathematician in the year 935 BC. He was born in the city http://faculty.oxy.edu/jquinn/home/Math490/Timeline/935BC.html

935 B.C. At the age of twenty-seven, Ibrahim ibn Sinan, was the only known mathematician in the year 935 BC. He was born in the city of Baghdad in 908 BC, where he also died at the age of thirty-eight. Ibrahim ibn Sinan’s interests were in geometry, especially tangents to circles, astronomy, and mathematical philosophy. He also wrote several books on geometry, including On Drawing the Three Conic Sections , which explains the constructions of the ellipse, hyperbola, and parabola. By studying the geometry of the shadows of the sun, Sinan tried to describe what he thought was the motion of the sun. The most famous work of Ibrahim ibn Sinan was the quadrature of the parabola. From this problem, Sinan developed a method of integration that was more general than the previously defined technique by Archimedes. His book, On the Measurement of the Parabola , introduces a theorem that states that the area of a segment of a parabola is four-thirds times the area of the triangle inscribed in that parabola. Ibrahim ibn Sinan translated many Greek mathematical and philosophical works. Because of his work in mathematical philosophy, he has been labeled the "foremost Arab mathematician to treat mathematical philosophy." Author References: Ibrahim, ibn Sinan ibn Thabit ibn Qurra

14. 908 A.D. 908 AD ibrahim ibn sinan was born in Bagdad (now located in Iraq) in908 AD. He was the grandson of Thabit ibn Qurra who translated http://faculty.oxy.edu/jquinn/home/Math490/Timeline/908AD.html

908 AD Ibrahim ibn Sinan was born in Bagdad (now located in Iraq) in 908 AD. He was the grandson of Thabit ibn Qurra who translated many Greek astronomical and mathematical works into Arabic. Ibrahim ibn Sinan studied geometry including tangents to circles, and the geometry of shadows, and the motion of the Sun. He is considered the first Arab mathematician to think about mathematical philosophy. He constructed an ellipse, parabola and hyperbola in On drawing the three conic sections . Later in the manuscript he proves that the area of a segment of a parabola is four-thirds the area of the inscribed triangle. Another work On the motions of the sun deals with the motion of the solar apogee, and has an analysis of the observations underlying Ptolemy's solar theory. Author: Charles DeBoer References: http://www-history.mcs.st-and.ac.uk/~history/Mathematicians/Ibrahim.html http://www.cwi.nl/~keesh/Iran/Maths/qurra.htm Math 490 Home Class Tasks ... Timeline Last updated October 1998

15. MSN Learning & Research - Search Results - Sinan Includes a bibliography, biography and building index. ibrahim ibn sinan ibn Thabit in Qurra http://encarta.msn.com/teleport/fromTools/find.asp?brand=elibrary&q1=Sinan

16. The Math Forum Trig/Calc Problem Of The Week Archive rectangle area white area = (2/3)(ax^3) = (2/3) rectangle area Bonus Thisformula comes from the mathematical work of ibrahim ibn sinan ibn Thabit ibn http://mathforum.org/calcpow/solutions/full_solution.ehtml?puzzle=45

17. The Time Of Al-razi ibrahim ibn sinan Abu Ishaq ibrahim ibn sinan ibn Thabit ibn Qurra.Born in 9089, died in 946. Grandson of Thabit ibn Qurra (qv http://www.levity.com/alchemy/islam15.html

History of Islamic Science 4 Based on the book Introduction to the History of Science by George Sarton (provided with photos and portraits) Edited and prepared by Prof. Hamed A. Ead These pages are edited by Prof. Hamed Abdel-reheem Ead, Professor of Chemistry at the Faculty of Science -University of Cairo, Giza, Egypt and director of the Science Heritage Center E-mail: ead@frcu.eun.eg Web site: http://www.frcu.eun.eg/www/universities/html/hamed2.htm Back to Islamic Alchemy The Time of Al-Mas'udi First Half of Tenth Century The overwhelming superiority of Muslim culture continued to be felt throughout the tenth century. Indeed, it was felt more strongly than over, not only the foremost men of science were Muslims, but also because cultural influences are essentially cumulative. By the beginning, or at any rate by the middle of the century, the excellence of muslim science was already so well established, even in the West, that each new arabic work benefited to some extent by the prestige pertaining to all. To be sure, other languages, such as Latin, Greek, or Hebrew were also used by scholars, but the works written in those languages contained nothing new, and in the field of science, as in any other, when one ceases to go forward, one already begins to go backward. All the new discoveries and the new thoughts were published in arabic. strangely enough, the language of the Qur'an had thus become the international vehicle of scientific progress. The development of Muslim culture was fostere in Spain by the eighth Umayyad caliph of the west, Abd al-Rahman II, the advances of Muslim science continued to take place almost extensively in the east.

18. 5. Forelæsning I Matematik 3MH En side fra behandlingen af parabler hos ibrahim ibn sinan (900tallet)efter en afskrift fra omkring 1700. Fra JL Berggren Episodes http://www.math.ku.dk/~ramskov/3mh-f98/uge05/forelas5.htm

3MHs hjemmeside Lektionsplan Liste over forelæsningerne Matematik 3MH: 5. forelæsning den 2. marts 1998 Matematik i middelalderen: arabisk, indisk og europæisk. Forelæsningen vil komme ind på følgende i tilknytning til kap. 1, 6, 7 og 8 i Katz: Udveksling og overførsel af matematisk viden mellem forskellige kulturer og områder i middelalderen ( en kopi af transparenten der illustrerer dette er nedenfor ), eksemplificeret ved det hindu-arabiske talsystem og trigonometri. De islamiske bidrag til ligningsteorien. De matematiske aktiviteter ved klostre og universiteter i Europa. Et par af højdepunkterne i europæisk middelaldermatematik: Leonardo fra Pisa og den matematiske behandling af simple bevægelser. Generelt om middelalderens historie, specielt kristendommens og islams udbredelse. En side fra behandlingen af parabler hos Ibrahim ibn Sinan (900-tallet) efter en afskrift fra omkring 1700. Fra: J. L. Berggren: Episodes in the Mathematics of Medieval Islam , Springer-Verlag 1986, p. 22. Et billede af et persisk astrolabium kan hentes (men det tager ca. 1 minut). Oversigt over overførsel og udveksling af matematisk viden indtil middelalderen.

19. History Of Astronomy: Persons (I) ibn Qurra see ibrahim, ibn sinan ibn Thabit ibn Qurra (908946); ibn Rushd Averroes;Abul Walid Mahommed ibn Achmed, ibn Mahommed ibn Roschd (1128-1198) http://www.astro.uni-bonn.de/~pbrosche/persons/pers_i.html

History of Astronomy Persons History of Astronomy: Persons (I) Ibn Haiyan, Jabir (?-803) Short biography (Or see here or here Ibn Qurra: see Thabit Ibn Qurra (836-901) Ibn Qurra: see Ibrahim, ibn Sinan ibn Thabit ibn Qurra (908-946) Ibn Rushd [Averroes; Abul Walid Mahommed Ibn Achmed, Ibn Mahommed Ibn Roschd] (1128-1198) Short biography and references From the Catholic Encyclopedia, 1913 Short biography (Or see here or here Ibn Sina [Avicenna] (980-1037) Short biography and references (MacTutor Hist. Math.) Short biography and references From the Catholic Encyclopedia, 1913 Short biography (Or see here or here Very short biography (Eric Weisstein's Treasure Trove) Crater Avicenna (lunar feature) Ibrahim, ibn Sinan ibn Thabit ibn Qurra (908-946) Short biography and references (MacTutor Hist. Math.) Ingalls, Albert (1888-1958) Very short biography (Eric Weisstein's Treasure Trove) Inghirami, Giovanni (1779-1851) Short biography and references From the Catholic Encyclopedia, 1913 Inman, James (1776-1859)

20. History Of Astronomy: Persons (Q) Qurra see ibrahim, ibn sinan ibn Thabit ibn Qurra (908946). WolfgangR. Dick. Created 16 Jan 1995. Latest update 19 June 2001. http://www.astro.uni-bonn.de/~pbrosche/persons/pers_q.html

History of Astronomy Persons History of Astronomy: Persons (Q) Qadi Zada, al'Rumi (1364-1436) Short biography and references (MacTutor Hist. Math.) Quensel, Conrad (1676-1732) Very short biographical data and links With a short biography in Swedish. Quetelet, Lambert Adolphe (1796-1874) Short biography and references (MacTutor Hist. Math.) Very short biography and reference (infoplease.com) Qurra: see Thabit Ibn Qurra (836-901) Qurra: see Ibrahim, ibn Sinan ibn Thabit ibn Qurra (908-946) Wolfgang R. Dick . Created: 16 Jan 1995. Latest update: 19 June 2001

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