English

On the transitivity of the group of orbifold diffeomorphisms

Geometric Topology 2021-02-15 v3 Differential Geometry

Abstract

Consider a connected manifold of dimension at least two and the group of compactly supported diffeomorphisms that are compactly supported isotopic to the identity. This group acts nn-transitive: Any tuple of nn points can be moved to any other tuple of nn points by a compactly supported diffeomorphism that is compactly supported isotopic to the identity. An orbifold diffeomorphism group is typically not nn-transitive: simple obstructions are given by isomorphism classes of isotropy groups of points. In this paper we investigate the transitivity properties of the group of compactly supported diffeomorphisms of orbifolds that are compactly supported isotopic to the identity. We also study an example in the category of area preserving mappings.

Keywords

Cite

@article{arxiv.1911.06709,
  title  = {On the transitivity of the group of orbifold diffeomorphisms},
  author = {Federica Pasquotto and Thomas O. Rot},
  journal= {arXiv preprint arXiv:1911.06709},
  year   = {2021}
}

Comments

Revised the main theorem and its proof to include singular points of singular dimension one