Facsimile of LJS 481, Commentary on Talkhīṣ aʻmāl al-ḥisāb

http://openn.library.upenn.edu/Data/0001/html/ljs481.html

Unattributed commentary on the summary of arithmetical operations by the late 13th- and early 14th-century scholar Ibn al-Bannāʼ. Demonstrates with examples the calculation of sums involving fractional numbers and square roots. Extensive marginal notes on a few leaves (p. 20-35). The first leaf is missing and several leaves have restored outer margins.