History of Hindu Mathematics: A Source Book v1.c8.s4.73

v1.c8.s4.73

**Transmission to the West.** The *kapâṭa-sandhi* method of multiplication was transmitted to the Arabs who learnt the decimal arithmetic from the Hindus. It occurs in the works of Al-Khowârîzmî (825), Al-Nasavî¹ (*c.* 1025) Al-Haṣṣâr² (*c.* 1175), Al-Kalasâdî³ (*c.* 1475) and many others. The following illustration is taken from the work of Al-Nasavî who calls this method *al-amal al-hindî* and *târîk al-hindî* ("the method of the Hindus"):