Korteweg-de Vries equation with finite-gap boundary conditions, and the Whitham deformations of Riemann surfaces

Distribution of eigenfrequencies for the

Distribution of eigenfrequencies for the wave equation in a finite domain. I. Three-dimensional problem with smooth boundary surface: R. Balian and C. Bloch. Service de Physique Théorique Centre d'Études Nucléaires de Saclay, BP no. 2 - 91, Gif-sur-Yvette, France

📂 Article 📅 1970 🏛 Elsevier Science 🌐 English ⚖ 74 KB

A new and simpler derivation of the equations of the "Already Unified Field Theory" of Maxwell, Einstein, and Rainich is presented. The approach is based on an extension to the manifold of general relativity of the intrinsic tensor techniques described in a previous paper.