English

Cyclic homology for bornological coarse spaces

K-Theory and Homology 2020-10-15 v2 Algebraic Topology Metric Geometry

Abstract

We define Hochschild and cyclic homologies for bornological coarse spaces: for a fixed field kk and group GG, these are lax symmetric monoidal functors XHHkG\mathcal{X}HH_{k}^G and XHCkG\mathcal{X}HC_{k}^G from the category of equivariant bornological coarse spaces GBornCoarseG\mathbf{BornCoarse} to the cocomplete stable \infty-category of chain complexes Ch\mathbf{Ch}_\infty. We relate these equivariant coarse homology theories to coarse algebraic KK-theory XKkG\mathcal{X} K^G_{k} and to coarse ordinary homology XHG\mathcal{X} H^G by constructing a trace-like natural transformation XKkGXHG\mathcal{X} K_{k}^G\to \mathcal{X} H^G that factors through coarse Hochschild (or cyclic) homology. We further compare the forget-control map for coarse Hochschild homology with the associated generalized assembly map.

Keywords

Cite

@article{arxiv.1907.02849,
  title  = {Cyclic homology for bornological coarse spaces},
  author = {Luigi Caputi},
  journal= {arXiv preprint arXiv:1907.02849},
  year   = {2020}
}