Reading Luca Pacioli's Summa in Catalonia: An early 16th-century Catalan manuscript on algebra and arithmetic

AbstractThis paper focuses on an anonymous Catalan manuscript of the early 16th century dealing with algebra and commercial arithmetic. More than half of it consists of a series of notes concerning parts of Luca Pacioli's Summa de Arithmetica, Geometria, Proportioni et Proportionalità, while most of the rest is related to Joan Ventallol's commercial arithmetic (1521). The use of a new kind of diagrams to work with equations is especially remarkable. The article throws new light on the cultivation of algebra in the Iberian peninsula before 1552, when the treatise on algebra by Marco Aurel, Libro Primero de Arithmética Algebrática, was first printed in Spanish