بدىع الحساب.

Manual of arithmetic and geometry for merchants' use including how to calculate the area of a ship. According to the compiler, the work includes excerpts from the following texts: Muntakhab al-ḥisāb, Līlāvatī, and Dastūr al-ʻamal. 1 online resource ([1], 76, [2] foliated leaves) : paper, diagrams