Nagarjuna was also termed as the Indian Einstein. He proposed the Theory of Relativity in his time in the form of a Sutra which is also called as the Prajna Parimata Sutra. He was a great patron of Mahayana doctrine.
Pandyas acknowledged the overlordship of the Cholas for about 30 years. Prantaka Viranayana was also defeated by Krishna III who was the Rashtrakuta King, in the battle of Takkolam in 949 A.D.