Dual entropy in discrete groups with amenable actions
Dual entropy in discrete groups with amenable actions
复制标题
具有顺应行为的离散群体中的双熵
DOI:
10.1017/s0143385702000366
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发表时间:
2000
影响因子:
0.9
通讯作者:
E. Germain
中科院分区:
文献类型:
--
作者:
N. Brown;E. Germain
Let G be a discrete group which admits an amenable action on a compact space and \gamma \in \textrm{Aut}(G) be an automorphism. We define a notion of entropy for \gamma and denote the invariant by ha(\gamma). This notion is dual to classical topological entropy in the sense that if G is abelian then ha(\gamma) = h_{\rm Top}(\hat{\gamma}) where h_{\rm Top}(\hat{\gamma}) denotes the topological entropy of the induced automorphism \hat{\gamma} of the (compact, abelian) dual group \hat{G}. ha(\cdot) enjoys a number of basic properties which are useful for calculations. For example, it decreases in invariant subgroups and certain quotients. These basic properties are used to compute the dual entropy of an arbitrary automorphism of a crystallographic group.
影响因子:
0.9
作者:
A. Sinclair
通讯作者:
A. Sinclair
DOI:
--
发表时间:
2002
期刊:
Journal of Operator Theory 48
影响因子:
--
作者:
R.Ikehata;K.Nishihara;Marie Choda
通讯作者:
Marie Choda