Yvonne Choquet-Bruhat is a mathematician and physician. Her area of research is at the very frontier between mathematics and physics. She has created new mathematical methods that have provided a solid basis for the study of several physical theories: the theory of general relativity, relativistic hydrodynamics, non-abelian gauge theory, supergravity theory, etc.- Yvonne Choquet-Bruhat is an exceptional mathematician, internationally recognised for creating new mathematical methods which have provided a solid basis for the study of several physical theories.- Her researches cover a wide range of knowledge, from the first mathematical proof of the existence of solutions to Einstein's relativity theory of gravitation to a study of the conversion of electromagnetic waves into gravitational waves (or the inverse) in proximity to a black hole."As soon as my sense of reasoning awakened, I wanted to understand something of this strange universe where we live, and what human beings do with it - especially me. I have flirted with various areas of knowledge: natural sciences, physics, history, philosophy. Finally, I became I finally became a mathematician working on the problems created by physics.As every scientist has found, any discovery - even a tiny one - is always a great joy, like discovering uncharted land."