Abstract In this paper, the definition and criterion of the form invariance of Nielsen equations for relativistic variable mass nonholonomic systems are given. The relation between the form invariance and the Noether symmetry is studied. Finally, we give an example to illustrate the application of the result.
Received: 29 September 2002
Revised: 04 August 2003
Accepted manuscript online:
PACS:
03.30.+p
(Special relativity)
Cite this article:
Qiao Yong-Fen (乔永芬), Zhao Shu-Hong (赵淑红), Li Ren-Jie (李仁杰) Form invariance and conserved quantities of Nielsen equations of relativistic variable mass nonholonomic systems 2004 Chinese Physics 13 292
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.