The Hindu-Arabic Numerals c8.50

c8.50

¹ "Decima vero o dicitur teca, circulus, vel cyfra vel figura nichili." [Maximilian Curtze, *Petri Philomeni de Dacia in Algorismum Vulgarem Johannis de Sacrobosco commentarius, una cum Algorismo ipso*, Copenhagen, 1897, p. 2.] Curtze cites five manuscripts (fourteenth and fifteenth centuries) of Dacia's commentary in the libraries at Erfurt, Leipzig, and Salzburg, in addition to those given by Eneström, *Öfversigt af Kongl. Vetenskaps-Akademiens Förhandlingar*, 1885, pp. 15–27, 65–70; 1886, pp. 57–60.