Bhaskara II was an Indian mathematician and astronomer who lived in the 12th century. He is best known for his work on the Siddhanta Shiromani.

The Siddhanta Shiromani was written in Sanskrit, which was the language of scholarship in India at the time.

The Siddhanta Shiromani consists of four parts: Lilavati (arithmetic), Bijaganita (algebra), Grahaganita (astronomy), and Goladhyaya (spherics).

The first part of the Siddhanta Shiromani is called Lilavati. It deals with arithmetic.

The second part of the Siddhanta Shiromani is called Bijaganita. It deals with algebra.

The third part of the Siddhanta Shiromani is called Grahaganita. It deals with astronomy.

The fourth part of the Siddhanta Shiromani is called Goladhyaya. It deals with spherics.

The main topic of the Lilavati is arithmetic.

The main topic of the Bijaganita is algebra.

The main topic of the Grahaganita is astronomy.

The main topic of the Goladhyaya is spherics.

The most important contribution of the Siddhanta Shiromani to mathematics is the invention of algebra.

The most important contribution of the Siddhanta Shiromani to astronomy is the development of the heliocentric model of the solar system.

The Siddhanta Shiromani is considered to be one of the greatest works of mathematics and astronomy ever written because of its originality, its comprehensiveness, and its influence on the development of mathematics and astronomy in India and beyond.