<human>:  Who was the real life person that the book, ‘The Man Who Knew Infinity’, is based on?
<bot>: The book is based on the life of Srinivasa Ramanujan. Ramanujan was a brilliant mathematician who worked at the University of Madras in India. He was self-taught and wrote his first paper on math at the age of 13. He is famous for his work on infinite series and continued fractions.