中文

图束与 Ricci 平坦性

微分几何 2025-02-14 v2 组合数学

摘要

我们发展了一种通过图束系统构造非阿贝尔 Cayley 的 S-Ricci 平坦图的系统方法,并给出显式例子。为此,我们证明在某些自然约束下,非平凡图束不可能(作为图)同构于基图与纤维图的直积。这与连续情形形成鲜明对比。

关键词

引用

@article{arxiv.2305.07938,
  title  = {Graph bundles and Ricci-flatness},
  author = {Wenbo Li and Shiping Liu},
  journal= {arXiv preprint arXiv:2305.07938},
  year   = {2025}
}

备注

We add an assumption in the statement of Theorem 3 and 4 which was omitted in the previous version and also a new example