The Hindu-Arabic Numerals c10.22

c10.22

One document, cited by Woepcke,¹ is of special interest since it shows at an early period, 970 A.D., the use of the ordinary Arabic forms alongside the ġobār. The title of the work is *Interesting and Beautiful Problems on Numbers copied by Aḥmed ibn Moḥammed ibn ʿAbdaljalīl, Abū Saʿīd, al-Sijzī*,² (951–1024) from a work by a priest and physician, Naẓīf ibn Yumn,³ al-Qass (died c. 990). Suter does not mention this work of Naẓīf.