TITLE: Work of ICM 2010 plenary speakers (and other humans)
QUESTION [38 upvotes]: The ICM is approaching. It would be nice for everybody who feels qualified to give a brief overview of the work of one of the plenary speakers. If anything, this would serve to make all of us a little more cultured. On that same note - I would be especially interested in getting to know more about the work of anybody who has been invited to speak in more than one section. (For one thing, the probability of understanding some of the work of any person satisfying that property might be higher than the mean.)
(There could be some real-life follow-up on this on the part of those of us who are going to be in India in August. Perhaps we could organise some very informal seminars?)

REPLY [5 votes]: R. Balasubramanian is an expert in the field of analytic number theory, especially the theory of the Riemann Zeta function. He, along with his colleagues, is well known for solving the Waring's problem for the 4th power i.e. $g(4)=19$. More about his works and publications can be found here:
http://www.imsc.res.in/~balu/balulist.htm