<human>:  In the book, ‘The Man Who Knew Infinity’ by James Logue, what is the name of the character who is a?
<bot>: The character who is a mathematician is Srinivasa Ramanujan. Ramanujan was a famous Indian mathematician who lived from 1887 to 1920. He was an autodidact, and he is famous for his mathematical discoveries. He was also known for his eccentric behavior and for his habit of wearing only his underwear.