C. L. Siegel's linearization theorem in infinite dimensions
Tài liệu tham khảo
C.L. Siegel: Über die Normalformen analytischer Differentialgleichungen in der Nähe einer Gleichgewichtslösung. Nachr. Akad. Wiss. Göttingen, Math.-phys. Kl. 21–30 (1952).
N.V. Nikolenko: Complete Integrability of the Nonlinear Schrödinger Equation. Dokl. Akad. Nauk SSSR Tom 227(1976), No. 2, Soviet Math. Dokl. Vol. 17 (1976), No. 2.
E. Zehnder: A simple proof of a generalization of a theorem by C.L. Siegel. in: Geometry and Topology, Rio 1976, Springer Lecture Notes Vol. 597, p. 855–866.
B. Ware: Infinite Dimensional Versions of two Theorems of Carl Siegel. Bull. AMS Vol. 82, No. 4 (1976), 613–615.
D.V. Choodnovsky and G.V. Choodnovsky: Infinite dimensional Siegel's theorem. Notices AMS, October 1976, P. A-581.