S. R. Srinivasa Varadhan is an Indian-American mathematician known for his significant contributions to the field of probability theory and stochastic processes. Born on January 2, 1940, in Chennai, India, he has made groundbreaking advancements in large deviations and statistical mechanics, which have applications in various scientific disciplines. Varadhan received the prestigious Abel Prize in 2010 for his work in mathematics, particularly for his role in developing the theory of large deviations. He has held academic positions at several institutions, including New York University, where he continues to influence the field through research and mentorship.