English

The index of a vector field on an orbifold with boundary

Differential Geometry 2009-04-06 v1

Abstract

A Poincar\'{e}-Hopf theorem in the spirit of Pugh is proven for compact orbifolds with boundary. The theorem relates the index sum of a smooth vector field in generic contact with the boundary orbifold to the Euler-Satake characteristic of the orbifold and a boundary term. The boundary term is expressed as a sum of Euler characteristics of tangency and exit-region orbifolds. As a corollary, we express the index sum of the vector field induced on the inertia orbifold to the Euler characteristics of the associated underlying topological spaces.

Keywords

Cite

@article{arxiv.0806.2113,
  title  = {The index of a vector field on an orbifold with boundary},
  author = {Elliot Paquette and Christopher Seaton},
  journal= {arXiv preprint arXiv:0806.2113},
  year   = {2009}
}

Comments

14 pages

R2 v1 2026-06-21T10:50:03.317Z