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Title: | Progressions, Rays and Houses in Medieval Islamic Astrology: A Mathematical Classification |
Author: | Casulleras Closa, Josep Hogendijk, Jan P. |
Keywords: | Astrologia àrab Classificació Matemàtica Arab astrology Classification Mathematics |
Issue Date: | 2012 |
Publisher: | Universitat de Barcelona |
Abstract: | Medieval Islamic mathematicians and astronomers developed a variety of mathematical definitions and computations of the three astrological concepts of houses, rays (or aspects) and progressions. The medieval systems for the astrological houses have been classified by J.D. North and E.S. Kennedy, and the purpose of our paper is to attempt a similar classification for rays and progressions, on the basis of medieval Islamic astronomical handbooks and instruments. It turns out that there were at least six different systems for progressions, and no less than nine different systems for rays. We will investigate the historical relationships between these systems and we will also discuss the authors to whom the systems are attributed in the medieval Islamic sources. |
Note: | Reproducció del document publicat a: http://www.raco.cat/index.php/Suhayl/article/view/267220 |
It is part of: | Suhayl. Journal for the History of the Exact and Natural Sciences in Islam, 2012, p. 33-102 |
URI: | http://hdl.handle.net/2445/113130 |
ISSN: | 1576-9372 |
Appears in Collections: | Articles publicats en revistes (Filologia Clàssica, Romànica i Semítica) |
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623709.pdf | 1.38 MB | Adobe PDF | View/Open |
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