Srinivas Varadhan is an Indian-American mathematician known for his significant contributions to the field of probability theory and statistics. He was born on January 26, 1937, in Chennai, India, and later moved to the United States for his academic career. Varadhan is particularly recognized for his work on large deviations, which helps in understanding the behavior of random processes. In 2007, Varadhan was awarded the prestigious National Medal of Science for his outstanding achievements in mathematics. He has held a faculty position at New York University and has published numerous research papers, influencing both theoretical and applied aspects of probability. His work continues to impact various fields, including statistical mechanics and information theory.