Li, Ziping Global canonical symmetry in a quantum system. (English) Zbl 0866.58076 Sci. China, Ser. A 39, No. 7, 738-747 (1996). Reviewer: V.Perlick (Berlin) MSC: 58Z05 81S40 81T99 PDFBibTeX XMLCite \textit{Z. Li}, Sci. China, Ser. A 39, No. 7, 738--747 (1996; Zbl 0866.58076)
Li, Ziping Generalized Noether theorem and Poincaré-Cartan integral invariant for singular high-order Lagrangian in fields theories. (English) Zbl 0791.58119 Sci. China, Ser. A 36, No. 10, 1212-1225 (1993). MSC: 58Z05 81T10 PDFBibTeX XMLCite \textit{Z. Li}, Sci. China, Ser. A 36, No. 10, 1212--1225 (1993; Zbl 0791.58119)