Mathematics in Ancient and Medieval India c4.s4.t5.1

c4.s4.t5.1

Jñānarāja, the author of *Siddhātasundara*² and *siddhāntasundarabīja*³ was the son of Naganātha. Both the works still remain unpublished. The *Siddhāntasundara* in the Sphuṭādhyāya chapter contains sine table and trigonometrical relations.⁴ This was written in 1503 A.D.⁵ His *siddhāntasundarbīja* is a separate work on algebra which was written as a sequel to Bhāskara II's *Bījagaṇita*. This *Bījagaṇita* has been repeatedly cited by his son Sūryadāsa.