This paper surveys the results established so far by the on-going research on the planetary theories in Arabic astronomy. The most important results of the Maragha astronomers are gathered here for the first time, and new areas for future research are delineated. The conclusions reached demonstrate that the Arabic astronomical works mentioned here not only elaborate the connection between Arabic astronomy and Copernicus, but also that such activities, namely the continuous reformulation of Greek astronomy, were not limited to a specific (...) group of astronomers or to a specific geographical area. It is shown that such activities were spread over a period of more than seven hundred years, from the early eleventh till the sixteenth century, and over an area stretching from the Andalusian peninsula in the west to the farthest reaches of Central Asia in the east. (shrink)

In this article we study the development of the mathematical theorem, now known as the T Couple, and discuss the difference between its plane and spherical applications.

In this article the author analyzes a fifteenth-century Arabic reform of the Ptolemaic model for Mercury. The author of the reform was the Central Asian Al al-D who, in his youth, had been instructed in the mathematical sciences by none other than the famous Central Asian monarch Ulugh Beg (1394 has been yet identified to have produced a theoretical text devoted to the criticism, let alone the reform, of the Ptolemaic mathematical planetary models. The present article on Qushji's reform of (...) the Ptolemaic model for Mercury includes a critical first edition of Qushji's Arabic text, an English translation, and a historical and technical commentary. (shrink)

Commentaire d'un fragment de texte astronomique grec de Paul d'Alexandrie et de ses autres versions, plus tardives, en syriaque et en arabe, qui permettent d'étudier la transmission des textes et d'une langue à une autre.

Name der Zeitschrift: Der Islam Jahrgang: 94 Heft: 2 Seiten: 423-433.

Este artículo presenta el descubrimiento de un texto hasta ahora desconocido, llamado al-lstidrāk, obra de un astrónomo anónimo andalusí del siglo XI que conoció personalmente a Azarquiel y que planteó sus dudas acerca de la tradición astronómica griega. Sobre la base de este nuevo texto, el artículo pone en cuestión la idea que se ha venido manteniendo de que la tradición astronómica islámica fue sobre todo filosófica en al-Andalus y más matemática en Oriente. Se aducen además datos de ambos lados (...) del Mediterráneo que demuestran que hubo una continuidad y unos contactos entre los dos extremos. El artículo mantiene que la falacia en esta caracterización de la astronomía islámica proviene de una falsa comparación entre las obras de filósofos occidentales con la de astrónomos orientales; cuando se comparan las obras astronómicas del Este y del Oeste queda claro que fueron los mismos problemas los que se plantearon en obras astronómicas en todo el orbe islámico. También se hace evidente que astrónomos orientales como Ibn al-Shāṭir de Damasco estaban sensibilizados a las mismas cuestiones filosóficas que preocupaban a los filósofos andalusíes y respondieron a estas cuestiones con sus propias respuestas filosóficas. (shrink)

This collection extends the boundaries of global feminism to include Islamic women. Challenging Orientalist assumptions of Muslim women as victims of Islam, these essays focus on women's negotiations for identity, power, and agency as participants in religious, cultural and nationalist movements. This book gathers Signs essays on women in the Middle East, South Asia, and the Diaspora to explore how women negotiate identities and attempt to gain political, economic, and legal rights. This collection shows Islam to be a diverse set (...) of variable practices and beliefs shaped by region, nation, ethnicity, sect, and class, as well as by responses to many cultural and economic processes. In examining women's participation in religious and nationalist projects, these critics debate controversial issues: Does Islamic feminism provide an alternative, revolutionary paradigm to Eurocentric liberal humanism and western feminism? Is Islam more oppressive to women than the modern secular state? How are the lives and texts of Arab and Muslim women constructed for local or western consumption? These essays expose the shortcomings of the secularist assumptions of many recent feminist analyses, which continue to treat religion in general and fundamentalism in particular as a tool of oppression used against women, rather than as a viable form of feminist agency producing contradictory effects for its participants. The essays in this book first appeared in Signs: Journal of Women in Culture and Society. Contributors: S. M. Shamsul Alam Amal Amireh Mary Elaine Heglund Shahnaz Khan Anouar Majid Val Moghadam Julia Peteet Elora Shehabbudin Gabriele vom Bruck. (shrink)

BĪRŪNĪ, ABŪ RAYḤĀN MOḤAMMAD b. Aḥmad (362/973- after 442/1050), scholar and polymath of the period of the late Samanids and early Ghaznavids and one of the two greatest intellectual figures of his time in the eastern lands of the Muslim world, the other being Ebn Sīnā.