The Man Who Knew Infinity Index -

Minor characters—like the British officer who denied Ramanujan a scholarship, or the landlady in Cambridge—may not appear. Instead, index the event: search “scholarship, rejected” or “lodging, Cambridge.”

In the vast literature on Srinivasa Ramanujan (1887–1920), Robert Kanigel’s The Man Who Knew Infinity (Scribner, 1991) holds a unique place. It is the first full-length biography accessible to both mathematicians and general readers. Yet one component has remained invisible to criticism: the book’s index. Typically viewed as a utilitarian back-of-the-book list, the index is, in fact, a powerful interpretive device (Duncan, 2018). It reflects choices about what—and whom—the biographer deems significant. This paper asks: What does the index of The Man Who Knew Infinity reveal about the construction of Ramanujan’s legacy? the man who knew infinity index

Our analysis proceeds in three parts. First, we quantify the index’s entries by category (people, places, mathematical concepts, etc.). Second, we examine notable omissions and imbalances. Third, we compare Kanigel’s index to a hypothetical “mathematical index” derived from Ramanujan’s notebooks. We conclude that the index prioritizes narrative and social context over technical content, a choice that democratizes Ramanujan’s story but risks obscuring the very infinity he knew. Yet one component has remained invisible to criticism:

Robert Kanigel’s The Man Who Knew Infinity (1991) remains the definitive biography of Srinivasa Ramanujan, the Indian mathematical genius. While the narrative itself is compelling, the book’s index offers a unique window into its structure and themes. This paper examines how the index serves not merely as a navigation tool but as a condensed map of Ramanujan’s life—highlighting key figures, mathematical ideas, cultural tensions, and the tragic arc of his career. This paper asks: What does the index of

Author: [Your Name/Academic Affiliation]
Published: Journal of Biographical Methods, Vol. 12, No. 1, 2026

Minor characters—like the British officer who denied Ramanujan a scholarship, or the landlady in Cambridge—may not appear. Instead, index the event: search “scholarship, rejected” or “lodging, Cambridge.”

In the vast literature on Srinivasa Ramanujan (1887–1920), Robert Kanigel’s The Man Who Knew Infinity (Scribner, 1991) holds a unique place. It is the first full-length biography accessible to both mathematicians and general readers. Yet one component has remained invisible to criticism: the book’s index. Typically viewed as a utilitarian back-of-the-book list, the index is, in fact, a powerful interpretive device (Duncan, 2018). It reflects choices about what—and whom—the biographer deems significant. This paper asks: What does the index of The Man Who Knew Infinity reveal about the construction of Ramanujan’s legacy?

Our analysis proceeds in three parts. First, we quantify the index’s entries by category (people, places, mathematical concepts, etc.). Second, we examine notable omissions and imbalances. Third, we compare Kanigel’s index to a hypothetical “mathematical index” derived from Ramanujan’s notebooks. We conclude that the index prioritizes narrative and social context over technical content, a choice that democratizes Ramanujan’s story but risks obscuring the very infinity he knew.

Robert Kanigel’s The Man Who Knew Infinity (1991) remains the definitive biography of Srinivasa Ramanujan, the Indian mathematical genius. While the narrative itself is compelling, the book’s index offers a unique window into its structure and themes. This paper examines how the index serves not merely as a navigation tool but as a condensed map of Ramanujan’s life—highlighting key figures, mathematical ideas, cultural tensions, and the tragic arc of his career.

Author: [Your Name/Academic Affiliation]
Published: Journal of Biographical Methods, Vol. 12, No. 1, 2026