Ramaswamy S. Vaidyanathaswamy (1894–1960) was an Indian mathematician who wrote the first textbook of point-set topology in India.
He is notable for having been the first to discover the generalisation of the crystallographic restriction theorem to arbitrary dimensions.
[1] Vaidyanathaswamy studied Mathematics at the University of Edinburgh in Scotland, under Prof Edmund Taylor Whittaker graduating around 1914.
After his return to India, he was a professor at the University of Madras, and after his retirement was associated with the Indian Statistical Institute in Calcutta.
[2] His proposers were Herbert Westren Turnbull, Edmund Taylor Whittaker, Ralph Allan Sampson and James Hartley Ashworth.