« In A sense, Khwarizmi is more entitled to be called « the father of algebra » than Diophantus because Khwarizmi is the first to teach algebra in an elementary form and for its own sake, Diophantus is primarily concerned with the theory ofwel numbers. » Con l’applicazione mobile “AgenziaEntrate”, http://cqr3d.ru/user/felonysunday2/