Can any one tell me more details about this Suryadeva Yajva:
The story below is found in a website with some junk story. Some one born in 1191 advising RRC and RJC - Stuff like Kanthaloorsalai sack for links with Moors - that too advised by this person born in 1191 ( or was the year printed wrongly?)
Logarithm Tables evolved from the Tables of Tamizhagam/South India:
Suryadeva Yajva (c.1191-1270) was a great astronomer in the courts of Rajaraja (985-1014) and Rajendra (1012-1044) Cholas. He helped the Kings during their campaigns to Gangetic areas and South-East Asian Countries for the naval expeditions. He also informed them about the Naval Academy functioning at Kanthalursalai having links with Moors. Thus Rajarajan immediately took action and destroyed their base dangerous to South India seizing many ships of the Cheras. Later, they were inducted in his navy. Yajva only wrote a commentary for Aryabhatiyam, but compiled astronomical data and tables based on his observations during his journey along with the Kings