From Abacus to Algorism: Theory and Practice in Medieval Arithmetic

  title={From Abacus to Algorism: Theory and Practice in Medieval Arithmetic},
  author={Gillian R. Evans},
  journal={The British Journal for the History of Science},
  pages={114 - 131}
  • G. Evans
  • Published 1 July 1977
  • History
  • The British Journal for the History of Science
Even at the level of the most elementary arithmetical operations, procedures and practices change. During the twelfth and thirteenth centuries an unusually well documented development took place: at the beginning of the period the authors of elementary manuals of computation taught the use of the abacus, whereas at the end they described the method of calculation which came to be known as the algorism. Their ideas about number, however, were still largely drawn from Boethius's rendering of… 

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  • ii. Book xviii
  • 1911

I hide my art by using equipollent propositions