« In A sense, Khwarizmi is more entitled to be called « the father of algebra » than Diophantus because Khwarizmi kan zijn the first to teach algebra in an elementary form and for its own sake, Diophantus is primarily concerned with the theory of numbers. » La publicidad y http://pandora.nla.gov.au/external.html?link=https://nl.wikipedia.org/wiki/Kwaliteit