Early Life and Self-Education Born on December 22, 1887, into a modest Brahmin family, Ramanujan demonstrated extraordinary mathematical ability from a young age. He mastered advanced trigonometry and developed his own theorems while still a teenager, often without formal proofs. Formal schooling proved inconsistent: he failed exams outside mathematics, and financial hardship made continued study difficult. But Ramanujan’s notebooks — filled with thousands of results, identities, and conjectures — reveal a mind constantly at work.

When readers first encounter The Man Who Knew Infinity: A Life of the Genius Ramanujan by Robert Kanigel, they are often daunted by its sheer depth. This isn't just a biography; it is a 448-page journey through number theory, colonial India, WWI-era England, and the psychology of creativity. To navigate this masterpiece, one needs more than a bookmark—one needs a .

The Man Who Knew Infinity " exists as both a highly-regarded 1991 biography Robert Kanigel 2015 feature film starring Dev Patel and Jeremy Irons. The Book Review: A Scholarly Masterpiece

The Man Who Knew Infinity: A Life of the Genius Ramanujan Author: Robert Kanigel Publisher: Charles Scribner's Sons Year: 1991 ISBN: 0-684-19259-4