Of course, our hero is also quite ill with tuberculosis through all of this, so the movie benefits from the poignancy of a brilliant life about to be extinguished. “Every single positive integer is one of his friends,” Hardy’s colleague Littlewood (Toby Jones) aptly observes after Ramanujan notices that the number of his taxi, 1729, happens to be “the smallest number expressible as the sum of two cubes in two different ways.” (Such anomalies have today come to be called “taxicab numbers,” after Ramanujan.) Ramanujan, meanwhile, equates his grasp of number theory to a religious experience - to a glimpse of God, in short - as something that comes to him intuitively rather than through cold, hard calculation. Hardy pushes him to be more diligent in his proofs. Hardy (Jeremy Irons), who suspects his protege is right but unrigorous. We watch Ramanujan shuffle back and forth between his digs at Cambridge and the office of his mentor, professor G.H. This is math at its purest - math for math’s sake - and it’s heady, if hardly cinematic, stuff.

All he had to do was prove it to a skeptical, Anglo-centric academic community.ĭev Patel portrays Srinivasa Ramanujan in the film, which is based on Robert Kanigel’s 1991 biography. As a number grows larger, approaching infinity, could there be a formula, Ramanujan wondered, that would calculate the number of its partitions?

The number 4, for instance, can be expressed as the sum of five - and only five - “partitions” of whole numbers: 1+1+1+1 1+1+2 1+3 2+2 and 4.

For simplicity’s sake, the film focuses on only one aspect of Ramanujan’s work: his pioneering exploration of number theory, particularly as related to partitions. How do you show, in ways that are at least vaguely cinematic, the stroke of genius?ĭev Patel plays Ramanujan, a self-taught mathematical prodigy from India who died tragically at age 32 after doing groundbreaking work at Cambridge University in the early years of the 20th century.

For that reason, movies about such original thinkers as famous writers and artists - or, as in “The Man Who Knew Infinity,” the pioneering mathematician Srinivasa Ramanujan - suffer from an inherent difficulty. The life of the imagination is difficult to capture, let alone to contain, onscreen. Jeremy Irons (left) and Dev Patel (right) star in “The Man Who Knew Infinity,” a film about pioneering mathematician Srinivasa Ramanujan.

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