中文

Alexandrov 空间的等距群

微分几何 2014-02-26 v3

摘要

对于具有下界曲率的 Alexandrov 空间,我们确定了其等距群的最大维数,并证明若其等距群维数达到最大,则该空间等距同构于一个 Riemann 流形。我们还确定了等距群可能维数之间的间隙,并证明如果 Alexandrov 空间是对称的,则它等距同构于一个 Riemann 流形。

关键词

引用

@article{arxiv.1109.4878,
  title  = {Isometry groups of Alexandrov spaces},
  author = {Fernando Galaz-Garcia and Luis Guijarro},
  journal= {arXiv preprint arXiv:1109.4878},
  year   = {2014}
}

备注

Final version of the paper, accepted for publication at the Bulletin of the London Mathematical Society. It improves the proof of the Principal Orbit Theorem in section 2, and completes the missing cases in section 6 on dimension gaps