His work with M S Narasimhan on unitary vector bundles and the Narasimhan–Seshadri theorem has influenced the field a lot. His work on Geometric Invariant Theory and on Schubert varieties, in particular his introduction of standard monomial theory, is widely recognized.
Sheshadri is also the founder of the Chennai Mathematical Institute.
Who along with CS Sheshadri proposed the
Jayant Narlikar :
The Indian astrophysicist who is a proponent of steady state cosmology. He developed with Sir Fred Hoyle the conformal gravity theory, commonly known as Hoyle–Narlikar theory. It synthesizes Albert Einstein’s Theory of Relativity and Mach's Principle. It proposes that the inertial mass of a particle is a function of the masses of all other particles, multiplied by a coupling constant, which is a function of cosmic epoch. In cosmologies based on this theory, the gravitational constant G decreases strongly with time.
Narlikar is internationally known for his work in cosmology, especially in championing models alternative to the popular Big Bang model. During 1994-1997, he was the President of the Cosmology Commission of the International Astronomical Union. His research work has involved Mach’s Principle, quantum cosmology, and action-at-a-distance physics.
During 1999-2003, Narlikar headed an international team in a pioneering experiment designed to sample air for microorganisms in the atmosphere at heights of up to 41 km. Biological studies of the collected samples led to the findings of live cells and bacteria, which introduced the possibility that the earth is being bombarded by microorganisms, some of which might have seeded life itself on earth.
Prof. U.R. Rao:
The eminent space scientist and former chairman of the Indian Space Research Organisation. Presently he is the Chairman of the Governing Council of the Physical Research Laboratory at Ahmedabad.
Career and Research :
Rao started his career as a cosmic ray scientist, under the Dr Vikram Sarabhai, which work he continued at MIT. In association with the JPL Group, he was the first to establish the continuous nature of the solar wind and its effect on geomagnetism using Mariner 2 observations. Rao's experiments on a number of Pioneer and Explorer spacecraft led to a complete understanding of the solar cosmic ray phenomena and the electromagnetic state of the interplanetary space. Convinced of the imperative need to use space technology for rapid development, Rao undertook the responsibility for the establishment of satellite technology in India in 1972. Under his guidance, beginning with the first Indian satellite "Aryabhata" in 1975, over 18 satellites including Bhaskara, APPLE, Rohini, INSAT-1 and INSAT-2 series of multipurpose satellites and the IRS-1A and IRS-1B remote sensing satellites were designed, fabricated and launched for providing communication, remote sensing and meteorological services.
After taking charge as Chairman, Space Commission and Secretary, Department of Space in 1985, Rao accelerated the development of rocket technology,resulting in the successful launch of ASLV rocket in 1992. He was also responsible for the development of the operational PSLV launch vehicle, which successfully launched a 850 kg. satellite into a polar orbit in 1995. Rao initiated the development of the geostationary launch vehicle GSLV and the development of cryogenic technology in 1991. He was responsible for successful launch of INSAT satellites during his stint at ISRO. The launch of INSAT satellites gave a thrust to communications in India, during the 1980s and 1990s. The successful launch of INSAT provided telecommunication links to remote corners of India. During these decades fixed telephone (called as landline) expanded throughout country due to availability of satellite links at different places in the ground. People could talk easily from anywhere by use of STD (Subscriber Trunk Dialing) instead of waiting for hours to get the connection.This development played a key role in future for India to develop as an Information Technology hub. He was the first Chairman of Antrix Corporation
Raghavan Narasimhan : an Indian mathematician at the University of Chicago.
Narasimhaiengar Mukunda : Indian theoretical physicist.
M. G. K. Menon: a physicist who works on cosmic rays and fundamental particles.
Ranjan Roy Daniel : a physicist who worked in the fields of cosmic rays and space physics.