The Siddhanta Shiromani is a comprehensive treatise on mathematics and astronomy written by Bhaskara I in 1150 CE. It consists of four parts: Lilavati, Bijaganita, Grahaganita, and Goladhyaya.

The Lilavati is the first part of the Siddhanta Shiromani and it deals with arithmetic. It covers topics such as addition, subtraction, multiplication, division, fractions, and square roots.

The Bijaganita is the second part of the Siddhanta Shiromani and it deals with algebra. It covers topics such as linear equations, quadratic equations, indeterminate equations, and Diophantine analysis.

Bhaskara I was the first mathematician to develop the concept of negative numbers. He used negative numbers to represent debts and subtractions.

The Grahaganita is the third part of the Siddhanta Shiromani and it deals with astronomy. It covers topics such as the motion of the planets, eclipses, and comets.

The Karanakutuhala is a treatise on spherical astronomy written by Bhaskara I in 1183 CE. It covers topics such as the construction of astronomical instruments, the calculation of time, and the determination of the positions of the planets.

Bhaskara I was the first mathematician to develop the concept of the celestial sphere. He used the celestial sphere to explain the motion of the planets and stars.

Bhaskara I developed the completing the square method for solving quadratic equations. This method involves adding and subtracting a constant term to both sides of the equation in order to make it a perfect square.

Bhaskara I developed the chakravala method for solving indeterminate equations. This method involves generating a sequence of numbers that eventually leads to a solution to the equation.

Bhaskara I developed a method for calculating the circumference of a circle that is based on the idea of approximating the circle by a regular polygon. This method is known as the Bhaskara method.

Bhaskara I developed a method for calculating the area of a circle that is based on the idea of approximating the circle by a regular polygon. This method is known as the Bhaskara method.

Bhaskara I developed a method for calculating the volume of a sphere that is based on the idea of approximating the sphere by a regular polyhedron. This method is known as the Bhaskara method.

Bhaskara I developed a method for calculating the surface area of a sphere that is based on the idea of approximating the sphere by a regular polyhedron. This method is known as the Bhaskara method.

Bhaskara I developed a method for calculating the sine of an angle that is based on the idea of approximating the sine by a rational number. This method is known as the Bhaskara method.

Bhaskara I developed a method for calculating the cosine of an angle that is based on the idea of approximating the cosine by a rational number. This method is known as the Bhaskara method.