Radially symmetric wave maps from \((1+2)\)-dimensional Minkowski space to the sphere
The result implies global existence of smooth solutions to the Cauchy problem for radially symmetric wave maps from the \((1+2)\)-dimensional Minkowski space to the sphere for smooth radially symmetric data. See also [\textit{J. Shatah} and \textit{M. Struwe}, Geometric wave equations (Courant Lecture Notes in Mathematics 2, New York, NY: New York University) (1998; Zbl 0993.35001)].
scientific article; zbMATH DE number 2075736