• Corpus ID: 56561189

Progressions, Rays and Houses in Medieval Islamic Astrology: A Mathematical Classification

  title={Progressions, Rays and Houses in Medieval Islamic Astrology: A Mathematical Classification},
  author={Josep Casulleras and Jan P. Hogendijk},
  journal={Suhayl. International Journal for the History of the Exact and Natural Sciences in Islamic Civilisation},
  • J. Casulleras, J. Hogendijk
  • Published 2012
  • Physics
  • Suhayl. International Journal for the History of the Exact and Natural Sciences in Islamic Civilisation
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… 
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