"The Man Who Knew Infinity" by Robert Kanigel is a captivating biography that tells the extraordinary story of Srinivasa Ramanujan, a self-taught mathematical genius from India who rose from humble beginnings to revolutionize the field of mathematics in the early 20th century.

Born in a small village in South India, Ramanujan displayed an innate talent for mathematics from a young age. Despite not having any formal training, he made groundbreaking discoveries and developed complex theorems that puzzled and amazed leading mathematicians of his time.

The book explores Ramanujan's journey from his struggles for recognition in India to his eventual collaboration with G.H. Hardy, a prominent British mathematician. Hardy recognized Ramanujan's brilliance and invited him to study at the University of Cambridge, where their partnership led to profound contributions to number theory and infinite series.

While Ramanujan's mind was filled with miraculous mathematical insights, he faced numerous challenges in his personal life. Cultural and racial barriers, health problems, and the upheaval caused by World War I put a strain on his career and relationships.

Kanigel's meticulous research and engaging storytelling shed light on Ramanujan's life, highlighting his triumphs and tribulations. The author delves into the complex relationship between Ramanujan and Hardy, emphasizing their deep mutual respect and the cultural clashes they faced.

"The Man Who Knew Infinity" not only explores the life of an exceptional mathematician but also portrays the sheer beauty, elegance, and power of mathematics itself. Kanigel's vivid descriptions and accessible explanations of Ramanujan's mathematical findings allow readers to appreciate his brilliance, even if they lack mathematical expertise.

In this meticulously researched biography, Kanigel presents a remarkable portrait of Srinivasa Ramanujan, showcasing his genius, determination, and the enduring legacy he left behind in the world of mathematics.