| 1. S. R. Srinivasa Varadhan is an American mathematician renowned for his work on stochastic processes and mathematical physics. He is a professor at the Courant Institute of Mathematical Sciences at New York University. In 2023, he was honored with the Padma Vibhushan award. |
| 2. Varadhan is known as the 795th most popular mathematician globally and the 12th most popular Indian mathematician. |
| 3. He moved to Tambaram, Madras in 1954, where he studied at a local college before progressing to higher studies. |
| 4. His interest in mathematics was sparked during high school when his teacher introduced him to problem-solving sessions, which he found enjoyable. |
| 5. Transitioning from Tamil to English as the language of instruction posed challenges when he entered college, leading Varadhan to study both languages. |
| 6. Starting as a postdoctoral fellow in 1963, Varadhan eventually became a professor at the Courant Institute of Mathematical Sciences. |
| 7. Varadhan's pioneering work in probability theory has revolutionized our understanding of rare events and had applications in various fields. |
| 8. His collaboration with other mathematicians led to significant advancements in diffusion processes, population genetics, hydrodynamics, and large deviations. |
| 9. Varadhan's research has greatly contributed to mathematics, especially in diffusion equations, large deviation theory, and Martingale problems. |
| 10. He has authored several research papers and books on diverse mathematical topics. |
| 11. Tragically, his eldest son lost his life during the 9/11 attacks on the World Trade Center. |
| 12. Varadhan has played important roles, such as chairing the Mathematical Sciences jury for the Infosys Prize. |
| 13. In an interview, Varadhan shared that he once aspired to become a doctor but later changed his career path. |
| 14. He served as Director of the Courant Institute from 1980-1984 and again from 1992-1994. |
| 15. He holds the position of Professor of Mathematics and Frank J. Gould Professor of Science at NYU's Courant Institute. |
| 16. Varadhan is known as one of the most popular mathematicians globally and among the most prominent Indian mathematicians. |
| 17. He moved to Tambaram, Chennai in 1954 and studied at a local college before pursuing higher education. |
| 18. Varadhan's pioneering work in probability theory has revolutionized understanding of rare events with applications in quantum field theory, statistical mechanics, population dynamics, and traffic control. |
| 19. His collaboration with Daniel W. Stroock led to significant advancements in diffusion processes, introducing the concept of martingale solutions to stochastic differential equations. |
| 20. His research has greatly contributed to diffusion equations, large deviation theory, and martingale problems. |
| 21. He has authored numerous research papers and books on diverse mathematical topics. |
| 22. His eldest son, Gopalakrishnan Varadhan, tragically lost his life during the 9/11 attacks on the World Trade Center in 2001. |
| 23. Varadhan has chaired the Mathematical Sciences jury for the Infosys Prize. |
| 24. In interviews, Varadhan has shared that he once aspired to become a doctor but later changed his career path to mathematics. |
| 25. His landmark 1966 paper 'Asymptotic probabilities and differential equations' and his 1969 solution of the polaron problem in Euclidean quantum field theory shaped the general theory of large deviations. |
