What did bhaskaracharya discover?

Bhaskaracharya, also known as Bhaskara II, was a prominent 12th-century Indian mathematician and astronomer. He made significant contributions to mathematics, particularly in the fields of algebra, calculus, and number theory. His notable discoveries include the concepts of zero and negative numbers, as well as the formulation of theorems related to planetary motion and the principles of differential calculus. His most famous works include the "Lilavati," a treatise on arithmetic, and "Siddhanta Shiromani," which encompasses both mathematical and astronomical knowledge.