Srinivasa Ramanujan Iyengar was an Indian mathematician who worked during the early 20th century. He made substantial contributions to mathematical analysis, number theory, infinite series, and continued fractions, including solutions to mathematical problems then considered unsolvable. December 22, 1887 – April 26, 1920; died at 32. Alive at the same time as Adolf Hitler, Leo Tolstoy, Pablo Picasso, Friedrich Nietzsche, and Albert Einstein. Wiki link