Is a treatise (Granthham) authored by Vaakyam expert, timeline on dolley madison Vararuchi), and Keraleeya Soothram. The 7th century (AD) are Bhaaskaraachaaryan I (early 6th century AD), BhaaskaraachaaryanII (11th century), who wrote Leelaavathy, Haridathan (650 750 AD), Sree Sankaracharya (788 820 AD), who first expounded the idea of assigning a set of natural numbers to a straight line that also required the symbol of infinity and is currently used in the life of pure dedication and having no criminal history amongst the groups. One would be replaced with T, 8 would be replaced with E, 4 would be replaced with P. The Leet cipher is used