Numerals and Arithmetic in the Middle Ages

Abstract

Contents: Preface The abacus at Echternach in ca. 1000 A.D Abbon de Fleury, abaci doctor Algorismi vel helcep decentior est diligentia: the arithmetic of Adelard of Bath and his circle Ten or forty? A confusing numerical symbol in the Middle Ages Indian numerals in the Mediterranean basin in the 12th century, with special reference to the 'Eastern forms' The use of Arabic numerals among the three language cultures of Norman Sicily Why we read Arabic numerals backwards The Toledan Regule (Liber Alchorismi, part II): a 12th-century arithmetical miscellany, (with Ji-Wei Zhao and Kurt Lampe) Learning Indian arithmetic in the early 13th century Latin alphanumerical notation and annotation in Italian in the 12th century: MS London, British Library, Harley 5402 Fibonacci's 'method of the Indians' Addenda and corrigenda Indexes.