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