« In A sense, Khwarizmi is more entitled to be called « the father ofwel 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. » ↑ la notation sigma https://blogfreely.net/europecloth1/niet-bekend-feiten-over-meubelpanelen-wrapfolie