Author: Sib-al-Mrd£n£, Muhammad ibn Muhammad ibn 'Ahmad ibn Muhammad al-Dima-q£ al Qhir£
Shelf Number: Astronomy 2804
Dimensions: 30 x 20 cm
Copying Year: Unknown
The author mentions in his introduction that the original categories of numbers are three: units number, decimals, and hundreds. Each category is subdivided into nine compositions; these nine compositions are then subdivided once more into a countless number of items. He identified each of the nine principal categories with a letter of the alphabet, written in red ink, and the explanations written in black ink. This copy is written in [Nas¢] script containing several tables inserted amid the text. All of them written in red ink.