Charles Hermite (Popularity: ): Includes a biography comparing him with other contemporaries of his, references and quotations. Elie Cartan (Popularity: ): A brief biography of Cartan and exposition of his work in applied topology. Sophus Lie (Popularity: ): A short history of the life and work of Sophus Lie, whose work, Lie groups, has applications in quantum mechanics in relativity. Hermann Hankel (Popularity: ): The mathematician who developed Hankel functions and the Hankel transform. Gustav Jacobi (Popularity: ): The mathematician whose work with coordinate transformations is still common in mathematical physics Jean Fourier (Popularity: ): A short biography on the man who invented the Fourier series and transforms. Jean Delambre (Popularity: ): The mathematician who analysed the orbit of Uranus and predicted a possible extra planet. Vito Volterra (Popularity: ): A short biography on Volterra and his work in differential equations and mathematical physics. George Stokes (Popularity: ): A short biography on the mathematician who created Stokes's theorem Charles-Francois Sturm (Popularity: ): A biography of the Mathematican who worked on differential equations and created the form now call Sturm-Liouville equations. Joseph Liouville (Popularity: ): The mathematician who developed Sturm-Liouville differential equations. George Green (Popularity: ): A biography including quotations from his writings and contemporary articles.