Abstract In this paper, a new type of conserved quantity induced directly from the Mei symmetry for a relativistic nonholonomic mechanical system in phase space is studied. The definition and the criterion of the Mei symmetry for the system are given. The conditions for the existence and form of the new conserved quantity are obtained. Finally, an example is given to illustrate the application of the result.
Received: 12 April 2007
Revised: 18 May 2007
Accepted manuscript online:
PACS:
45.05.+x
(General theory of classical mechanics of discrete systems)
Zhang Xiao-Ni(张小妮), Fang Jian-Hui(方建会),Pang Ting(庞婷), and Lin Peng(蔺鹏) A new type of conserved quantity of Mei symmetry for relativistic nonholonomic mechanical system in phase space 2008 Chin. Phys. B 17 394
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.
