粗粒 Baum-Connes 定理与扭曲锥锥:奇度中的射性失败
K理论与同调
2025-05-23 v2 度量几何
算子代数
摘要
我们证明了 Roe 的一个猜想,通过构建统一的扭曲锥来违反粗粒 Baum-Connes 猜想。有趣的是,原因可能不是 Roe 所期待的,因为 obstruction 源于奇数度而非偶数度。
关键词
引用
@article{arxiv.2504.21811,
title = {Coarse Baum-Connes and warped cones: failure of surjectivity in odd degree},
author = {Christos Kitsios and Thomas Schick and Federico Vigolo},
journal= {arXiv preprint arXiv:2504.21811},
year = {2025}
}
备注
21 pages, 1 figure. Minor corrections and more details have been included