- central: adj. 1.中心的，中央的。 2. ...
- series: n. 〔sing., pl.〕 1. ...
- ascending central series: 升中心列
- Ascending central series
- Lower central series
- States have similarities among cultures , the united states central series of classical furniture , the 822 series is a fusion of classical ming and qing dynasty furniture and american furniture style works
In mathematics, especially in the fields of group theory and Lie theory, a central series is a kind of normal series of subgroups or Lie subalgebras, expressing the idea that the commutator is nearly trivial. For groups, this is an explicit expression that the group is a nilpotent group, and for matrix rings, this is an explicit expression that in some basis the matrix ring consists entirely of upper triangular matrices with constant diagonal.