On medieval Islamic multiplication tables

  title={On medieval Islamic multiplication tables},
  author={D. A. King},
  journal={Historia Mathematica},
  • D. A. King
  • Published 1974
  • Mathematics
  • Historia Mathematica
Abstract Multiplication tables for sexagesimal numbers were used by the astronomers of the Islamic Middle Ages in their arithmetical calculations and in the preparation of more sophisticated tables for finding planetary positions and for reckoning time by the sun and stars. Most known examples of Islamic multiplication tables contain about 3,600 entries, although one has been found containing 216,000 entries. 
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