Bija Ganita; or, the Algebra of the Hindus

Twelfth-century mathematician and astronomer Bhascara Acharya (1114-85) is considered to be medieval India's greatest mathematician. Forming part of his Sanskrit magnum opus Siddhanta Shiromani, this is his treatise on algebra. It was translated into English by Edward Strachey (1774-1832) and first published in 1813.