History of Hindu Mathematics: A Source Book v1.c7.s17.t5.36

v1.c7.s17.t5.36

Leonardo of Pisa in his work, *Liber Abaci* (1202), frequently refers to the nine Indian figures. At one place he says: “Ubi ex mirabili magisterio in arte per novem figuras indorum introductus” etc. In another place, as a heading to a separate division, he writes “De cognitione novem figurarum yndorum” etc., “Novem figure indorum he sunt 9 8 7 6 5 4 3 2 1.”