...
首页> 外文期刊>Topology and its applications >Groups of quasi-invariance and the Pontryagin duality
【24h】

Groups of quasi-invariance and the Pontryagin duality

机译:拟不变性群和庞特里亚金对偶

获取原文
获取原文并翻译 | 示例
           

摘要

A Polish group G is called a group of quasi-invariance or a Ql-group, if there exist a locally compjact group X and a probability measure n on X such that (1) there exists a continuous monomorphism φ from G into X with dense image, and (2) for each g € X either g e Φ(G) and the shift μ_g is equivalent to n or g Φ Φ(G) and μ_g is orthogonal to μ. It is proved that Φ(C) is a σ-compact subset of X. We show that there exists a Polish non-locally quasi-convex (and hence nonreflexive) Ql-group such that its bidual is not a Ql-group. It is proved also that the bidual group of a Ql-group may be not a saturated subgroup of X. It is constructed a reflexive non-discrete group topology on the integers.
机译:波兰语组G称为准不变组或Ql组,如果在X上存在局部组合组X和概率测度n,则(1)存在从G到X的连续单态φ (2)对于每个g€X要么是geΦ(G),并且偏移μ_g等于n或gΦΦ(G),并且μ_g正交于μ。证明Φ(C)是X的σ紧致子集。我们证明存在波兰的一个非局部拟凸Ql-基团(因此是非自反的)Ql-基团,因此其投标词不是Ql-基团。还证明了Q1基的双价基团可能不是X的饱和子基团。它是在整数上构造的自反非离散基团拓扑。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号