The Algebra of Mohammed Ben Musa

ABU ABDALLAH MoHAMMED BEN Musa, of Khowarezm, who it appears, from his preface, wrote this Treatise at the command of the Caliph AL MA.MUN, was for a long time considered
as the original inventor of Algebra. “Hac ars olim a MAHOMETE, Mos1s Arahisjilio, initium sumsit: etenim hifjus rei locupes testis LEO NARDUS PISANUS.”