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Ben Gerson Levi: more detail

The Astronomy of Levi ben Gerson (1288-1344): A Critical Edition of Chapters 1-20 with Translation and Commentary (Studies in the History of Mathematics and Physical Sciences) by Bernard R. Goldstein, 1985-07-15
The Astronomical Tables of Levi Ben Gerson (Connecticut Academy of Arts & Sciences Series, Vol 45) by Bernard R. Goldstein, 1974-06
Philosophie religieuse de Lévi-Ben-Gerson (French Edition) by Isidore. Weil, 1868-01-01
Astronomy of Levi Ben Gerson, 1288-1344
Levi Ben Gerson's Prognostication for the Conjunction of 1345 (Transactions of the American Philosophical Society) by Bernard R. Goldstein, David Pingree, 1990-11
Preliminary remarks on Levi ben Gerson's contributions to astronomy, (Israel Academy of Sciences and Humanities. Proceedings) by Bernard R Goldstein, 1969
R. Levi Ben Gerson: A bibliographical essay by Menachem Marc Kellner, 1979
Introduction to the History of Science. Volume 3, Science and Learning in the Fourteenth Century. Part I, The Time of Abu-l-Fida, Levi ben Gerson, and William of Occam (First half of the fourteenth century) by G. Sarton, 1962
Sefer Maassei Choscheb. Die Praxis des Rechners. Ein hebraisch-arithmetisches Werk des Levi Ben Gerschom aus dem jahre 1321. by Gerson (ed.). Levi ben Gershom [GERSONIDES]; LANGE, 1909-01-01

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Douay-Rheims Bible Online, First Book Of Paralipomenon Chapter 6
16 So the sons of levi were gerson, Caath, and Merari. 17 And these are the namesof the sons of gerson Lobni and Semei. 18 The sons of Caath Amram,
http://www.drbo.org/chapter/13006.htm

Extractions: prev Chapter 6 next The genealogies of Levi, and of Aaron: the cities of the Levites. The sons of Levi were Gerson, Caath, and Merari. The sons of Caath: Amram, Isaar, Hebron, and Oziel. The children of Amram: Aaron, Moses, and Mary. The sons of Aaron: Nadab and Abiu, Eleazar and Ithamar. Eleazar beget Phinees, and Phinees beget Abisue, And Abisue beget Bocci, and Bocci begot Ozi. Ozi beget Zaraias, and Zaraias beget Maraioth. And Maraioth beget Amarias, and Amarias beget Achitob. Achitob beget Sadoc, and Sadoc begot Achimaas. Achimaas beget Azarias, Azarias begot Johanan, Johanan beget Azarias. This is he that executed the priestly office in the house which Solomon built in Jerusalem. And Azarias beget Amarias, and Amarias beget Achitob. And Achitob beget Sadoc, and Sadoc beget Sellum, Sellum beget Helcias, and Helcias beget Azarias, Azarias beget Saraias, and Saraias beget Josedec. Now Josedec went out, when the Lord carried away Juda, and Jerusalem, by the hands of Nabuchodonosor. So the sons of Levi were Gerson, Caath, and Merari.
Jacob's Staff
The original Jacob s staff, or crossstaff, was a single pole device credited toLevi ben gerson (1288-1344), who was one of the leading Jewish
http://www.surveyhistory.org/jacob's_staff1.htm

Extractions: Article taken from "Backsights" Magazine published by Surveyors Historical Society When you hear the term Jacob (or Jacob's) staff, you probably have a mental image of a single pole used to support a compass. However, the original Jacob's staff was actually a surveying instrument developed in the 1300's that was used in making nautical and astronomical measurements. The original Jacob's staff, or cross-staff, was a single pole device credited to Levi ben Gerson (1288-1344), who was one of the leading Jewish mathematicians of the 14th century. The pole was marked in degrees, and the altitude of the stars could be determined by using a sliding wooden panel on the rod. The American version of the Jacob's staff seems to have only borrowed the name. Its function, as we know it, was to provide support for the compass. In a manufacturer's catalog from the 1880's, the surveyor's compass is described as being fitted to a slightly conical spindle with a spherical ball on its lower end. The ball is confined in a socket by pressure so slight that the ball can be moved in any direction in the operation of levelling the compass. The spindle and the ball-and-socket are part of the brass head of the Jacob staff. The brass head and a shoe, pointed with steel, were the mountings that we sold to make up the Jacob's staff.
L E A R N @ J T S DID YOU KNOW? LG Responsa: Euthanasia
I shall only mention the view of the famous philosopher and astronomer, RabbiLevi ben gerson usually called by the scholastics Maestre Leo de Bagnols
http://learn.jtsa.edu/topics/diduknow/lgresponsa/eleven.shtml

Extractions: Excerpt (almost complete): Keeper , pp. 239-241 January 8, 1936 Dear Doctor Ginsburg: Complying with your request, I shall put down in writing the statement I made to you orally with regard to the attitude of Jewish law and practice towards euthanasia. The earliest Jewish authority who discusses this problem directly and explicitly is Rabbi Judah of Regensburg, Bavaria (died 1217), who, in his work The Book of the Pious It is true Saul was justified in committing suicide (this is stated in as early a source as Genesis Rabbah 34:13); the honor of Israel required that its first King should not permit himself to be captured alive. But the Amalakite had no justification for hastening the King's death, and since shortening human life, even for a few moments, is punishable by death, he suffered by the hands of David the punishment he deserved. The correctness of the explanations given by our author for the justifiable suicide of Saul and for the [punishment by death] of the Amalakite is open to serious doubt and, as a matter of fact, there are several different explanations to be found in Rabbinic literature. I shall only mention the view of the famous philosopher and astronomer, Rabbi Levi Ben Gerson - usually called by the scholastics "Maestre Leo de Bagnols" - according to which David was solely motivated by his desire to uphold the newly established institution of monarchy in Israel (compare his commentary to II Samuel 1:14). Be that as it may, the author of the
Index De L Ouvrage De Shalom Sabar Mazal Tov Alphabetical Index
Aryeh Kalman, ben Zevi Jochebed, Aryeh Judah, ben Zevi Israel, 1880 levi FubiniHezekiah, Bachi Colombina, levi Fubini Moses, Bachi Judah, 1691
http://www.geocities.com/EnchantedForest/1321/ketub1.html

Extractions: Index par noms des fiancés/Index by grooms names Fiancé/Groom Fiancée/Bride Père du fiancé/Groom's Father's name Père de la fiancée/Bride's Father's name Année/Year Ville/Town Page Abraham Bruria Elijah Joseph Isfahan (Iran) Abuzaglo Judah Adrehi Freha (or Freja) Abuzaglo Mas'oud Adrehi Joseph Faro (Portugal) Afriat Jacob Afriat Aysha Afriat Joseph Afriat Abraham Essaouira (Mogador) (Morocco) Agha Muhammed Sadic Sarref Nasttar Khanom Muhammed Ismail Karbalai Abdul Meshed (Iran) Al-Cohen al-'Araqi Abraham Al-Sheikh al-Levi Rummiyyeh Al-Cohen al-'Araqi Mussa Al-Sheikh al-Levi Abraham Salem San'a (Yemen) Amron Gabriel Mi-Segni (Di Segni) Simha Amron Hezekiah Mi-Segni (Di Segni) Shabbetai Rome (Italy) Aryeh Kalman Ben Zevi Jochebed Aryeh Judah Ben Zevi Israel Singapore Ashkenazi Isaac Alfandari Fiora Ashkenazi Eliezer Alfandari Jacob Ferrara (Italy) Babai Fatou (?) Mordecai Yekutiel Yezd (Iran) Baer Nehemiah Nissim mi-Ascoli (Da Ascoli) Rosa Baer Shabbetai Haïm mi-Ascoli (Da Ascoli) Isaac Pesaro (Italy) Barchilon Isaac Hasan Leah Barchilon Jacob Hasan David Tetouan (Morocco) Ben Attaouil Salomon Benzaquen Rachel Ben Attaouil Jacob Benzaquen Isaac Gibraltar Bendelac Menahem Abudarham Dona Bendelac Samuel Abudarham Menahem Gibraltar Benoliel Daniel Joseph Ben Zonana Oro Boulisa Benoliel Judah Ben Zonana Moses Roma (Italy) Bueno Jacob Hananiah Bueno Gracia Bueno Joseph Bueno David Venice (Italy) Cantarini see me-ha-Hazanim Cohen Jacob Haï
Index De L Ouvrage De Shalom Sabar Mazal Tov Alphabetical Index
Bachi Colombina, levi Fubini Hezekiah, levi Fubini Moses, Bachi Judah, 1691 ben Zevi Jochebed, Aryeh Kalman, Aryeh Judah, ben Zevi Israel, 1880
http://www.geocities.com/EnchantedForest/1321/kmazfem.html

Extractions: Index par noms des fiancées/Index by brides names Fiancée/Bride Fiancé/Groom Père de la fiancée/Bride's Father's name Père du fiancé/Groom's Father's name Année/Year Ville/Town Page Abensur Leah Peixoto Jacob ha-Cohen Abensur Daniel Hamburg (Germany) Abudarham Dona Bendelac Menahem Bendelac Samuel Abudarham Menahem Gibraltar Adrehi Freha (or Freja) Abuzaglo Judah Abuzaglo Mas'oud Adrehi Joseph Faro (Portugal) Afriat Aysha Afriat Jacob Afriat Joseph Afriat Abraham Essaouira (Mogador) (Morocco) Afriat Mas'ouda Toby Salomon Toby (Tuvia ?) Phinehas Afriat Jacob Essaouira (Mogador) (Morocco) Al-Sheikh al-Levi Rummiyyeh Al-Cohen al-'Araqi Abraham Al-Cohen al-'Araqi Mussa Al-Sheikh al-Levi Abraham Salem San'a (Yemen) Alfandari Fiora Ashkenazi Isaac Ashkenazi Eliezer Alfandari Jacob Ferrara (Italy) Alkolumbri Kaden Shabbetai Haim Joseph Haim Alkolumbri Nissim Abraham Istanbul (Turkey) Ashkenazi Rebekah Isaac Benjamin Ashkenazi Moses Bombay (India) Attiya Reina Corcos Meir Corcos Jacob Attiya Abraham Essaouira (Mogador) (Morocco) Aziz Colomba me-ha-Hazanim (Cantarini) Samuel me-ha-Hazanim (Cantarini) Gerson ha-Cohen Aziz David Padua (Italy) Azulai Rosa Ha-Cohen Shemaiah Ha-cohen Abraham Azulai Joshua Ponta Delgada, Azores Islands (Portugal)
The Political Graveyard: Index To Politicians: Lesueur To Levi
Son of gerson B. levi and Elsa B. (Hirsch) levi; married, June 4, 1946, to KateSulzberger. Lawyer; law professor; president of the University of Chicago,
http://politicalgraveyard.com/bio/leszynski-levi.html
Judaic Treasures Of The Library Of Congress: Women Of Italy
Among the earliest of Hebrew books is this commentary on the Pentateuch by Leviben gerson (gersonides), printed by Abraham Conat in Mantua, c. 1476.
http://www.jewishvirtuallibrary.org/jsource/loc/Italy.html

Extractions: Women of Italy In the making of the Jewish book, women have played a role as publishers, printers, patrons, and writers. The first woman involved in printing Hebrew books was Estellina, the wife of the physician Abraham Conat, who introduced Hebrew printing in Mantua and published six Hebrew books there in 1474-77. A printing press had been established in that cultured city in 1471 and others followed. As David W. Amram writes in his The Makers of Hebrew Books in Italy At one of these presses Conat caught the inspiration to print Hebrew books, and communicated it to his worthy helpmeet, Estellina. She printed on her own account. . . "Investigation of the World" by Jedaiah Bedersi and in the colophon she writes, "I Estellina, wife of my master my husband, the honored Rabbi Abraham Conat, may he be blessed with children and may his days be prolonged, Amen! wrote this book, 'Investigation of the World"' . . . She "wrote" the book, as her husband said, "with many pens without the aid of a miracle," for the art had not yet invented the word "printing" by which to define itself. It seems clear that she had a hand in the printing and proofreading, both of which the word "wrote" connotes. It is most fitting that the Mantua of the Gonzagas, rulers who were patrons of the arts, be the place where a Jewish woman entered into Hebrew bookmaking. The Jews of that city were the most integrated into the general culture of any contemporary Jewish community, women as well as men. "The libraries of the women of Mantua," Shlomo Simonsohn writes in his
Catalan's Conjecture -- From MathWorld
Interestingly, more than 500 years before Catalan formulated his conjecture, Leviben gerson (12881344) had already noted that the only powers of 2 and 3
http://mathworld.wolfram.com/CatalansConjecture.html

Extractions: MATHWORLD - IN PRINT Order book from Amazon Number Theory Diophantine Equations Foundations of Mathematics ... Pegg Catalan's Conjecture The conjecture made by Belgian mathematician in 1844 that 8 and 9 ( and ) are the only consecutive powers (excluding and 1). In other words, is the only nontrivial solution to Catalan's Diophantine problem The special case and is the case of a Mordell curve Interestingly, more than 500 years before Catalan formulated his conjecture, Levi ben Gerson (1288-1344) had already noted that the only powers of 2 and 3 that apparently differed by 1 were and (Peterson 2002). This conjecture had defied all attempts to prove it for more than 150 years, although Hyyro and Makowski proved that no three consecutive powers exist (Ribenboim 1996), and it was also known that 8 and 9 are the only consecutive cubic and Square Numbers (in either order). The
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http://encyclopedia.astrologer.ru/cgi-bin/guard/L/Levi.html
Glossario
http://wissensgeschichte.biblhertz.it:8080/Glossario/Glossario_Italiano/baculo_m

Extractions: Glossario Italiano - Zope-Id: baculo_mensorio autore / Autor / author Camerota, Filippo descrizione / Beschreibung / description Strumento per misurazioni astronomiche e terrestri inventato, o forse solo descritto per la prima volta, da Levi ben Gerson (1342) che ne fa risalire l'origine al bastone del patriarca d'Israele. E' composto di un bastone lungo 6 spanne (ca. 135 cm) e largo 1 digito (ca. 2 cm). Ogni spanna è divisa in 8 parti, compresa la prima che presenta una riduzione di lunghezza pari a 1/20 (ca. 1 cm), corrispondente alla distanza che passa, secondo Levi, tra la superficie dell'occhio e il centro della visione. Lungo il bastone scorre un'asticella trasversale della lunghezza di 1 spanna. Questa asticella e il tratto del bastone compreso tra essa e l'occhio dell'osservatore, rappresentano rispettivamente la base e l'altezza di un triangolo simile a quello formato dai raggi visivi che abbracciano la larghezza di un oggetto incognito: il sole, la distanza tra due stelle, quella tra due torri o la larghezza di un edificio. didascalie / Bildlegenden / image descriptions Fig. in Cosimo Bartoli, Del modo di misurare le distantie, p. 11v.
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http://math.criced.tsukuba.ac.jp/Forall/project/history/2004/crossstaff/crosssta

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Cielo E Terra - Bibliografia Antica
edd. BR Goldstein, D. Pingree, Transactions of the American Philosophial
http://www.cieloeterra.it/bibliografiaantica.html

Extractions: Ailly Pierre d' , Concordantia astronomie cum theologia. Concordantia astronomie cum hystorica narratione. Et elucidarium duorum precedentium: domini Petri de Aliaco cardinalis Cameracensis, Auguste Vindelicorum 1490. Alberto Magno Albohali Albumasar Albumasar de magnis coniunctionibus ac eorum profectionibus octo continens tractatus, magistri Iohannis Angeli viri peritissimi diligenti correctione; Erhardique Ratdolt viri solertis eximia industria et mira imprimendi arte, qua nuper Venetiis, nunc Auguste Vindelicorum excellit nominatissimus pridie kal. Aprilis, 1489. Flores astrologie, impressum Venetiis per Jo. Baptistam Sessa, 1515. Introductorium in astronomiam Albumasaris abalachi octo continens libros partiales, Venetiis, mandato et expensis Melchionis Sessa, 1506 (trad. di Ermanno di Carinzia). Liber in quo est Introductorius maior ad scienciam iudiciorum astrorum. Ms. BN-Paris lat.16204 (trad. di Giovanni di Siviglia). Albumasaris de revolutionibus nativitatum edidit D. Pingree, Lipsiae 1968.

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