Una traduzione dell'Algebra di al-Khwarizmi nella Firenze del 14. secolo

This work presents the teaching of the solving technique for equations of the second degree described in the eighth century by al-Khwarizmi in his book Kitab al-hisab al-jabr w’al-muqabalah; the aim is to outline its history not only in the Latin translation by Gerard of Cremona, but especially in a further Tuscan vernacular version (about 1390), preserved in a manuscript (Florence, Biblioteca Nazionale, II.III.198), which has never been studied before, but only quoted in two manuscripts catalogues by Mazzatinti and van Egmond, and in a book about algebra in 14th century by Boncompagni. The manuscript transcription is given here.