中文

有限基上的可测量量子群胚与等变Kasparov理论

算子代数 2017-06-28 v1 K理论与同调

摘要

本文将关于局部紧量子群作用的等变Kasparov理论的一些重要结果[S. Baaj and G. Skandalis, 1989, 1993]推广到有限基上的可测量量子群胚情形。对于任意一对由有限基上正则可测量量子群胚G\cal G连续作用的C*-代数(A,B)(A,B),我们关联一个G\cal G-等变Kasparov理论群KKG(A,B){\sf KK}_{\cal G}(A,B)。Kasparov乘积可推广到此框架。通过应用关于有限基上正则可测量量子群胚作用的最新结果[S. Baaj and J. C., 2015; J. C., 2017],我们得到两个典范同态JG:KKG(A,B)KKG^(AG,BG)J_{\cal G}:{\sf KK}_{\cal G}(A,B)\rightarrow{\sf KK}_{\widehat{\cal G}}(A\rtimes{\cal G},B\rtimes{\cal G})JG^:KKG^(A,B)KKG(AG^,BG^)J_{\widehat{\cal G}}:{\sf KK}_{\widehat{\cal G}}(A,B)\rightarrow{\sf KK}_{\cal G}(A\rtimes\widehat{\cal G},B\rtimes\widehat{\cal G}),它们通过源自Takesaki-Takai对偶定理的一个版本[S. Baaj and J. C., 2015; J. C., 2017]的Morita等价而互逆。我们详细研究了共链可测量量子群胚的情形。特别地,若G1\mathbb{G}_1G2\mathbb{G}_2是两个幺半等价的局部紧量子群,我们得到了相关等变Kasparov范畴典范等价的一个新证明[S. Baaj and J. C., 2015]。

关键词

引用

@article{arxiv.1706.08516,
  title  = {Measured quantum groupoids on a finite basis and equivariant Kasparov theory},
  author = {Jonathan Crespo},
  journal= {arXiv preprint arXiv:1706.08516},
  year   = {2017}
}

备注

This paper is a follow-up to the article "Actions of measured quantum groupoids on a finite basis" [arXiv:1706.08292] from the same author. The introductory chapters are essentially identical so that the present article can almost be read independently