Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Georges de Rham was a Swiss mathematician, known for his contributions to differential topology. He studied at the University of Lausanne and then in Paris for a doctorate, becoming a lecturer in Lausanne in 1931; where he held positions until retirement in 1971; he held positions in Geneva in parallel. Georges de Rham was a Swiss mathematician, known for his contributions to differential topology.