English

Contrasting Various Notions of Convergence in Geometric Analysis

Metric Geometry 2020-06-02 v3 Differential Geometry

Abstract

We explore the distinctions between LpL^p convergence of metric tensors on a fixed Riemannian manifold versus Gromov-Hausdorff, uniform, and intrinsic flat convergence of the corresponding sequence of metric spaces. We provide a number of examples which demonstrate these notions of convergence do not agree even for two dimensional warped product manifolds with warping functions converging in the LpL^p sense. We then prove a theorem which requires LpL^p bounds from above and C0C^0 bounds from below on the warping functions to obtain enough control for all these limits to agree.

Keywords

Cite

@article{arxiv.1803.06582,
  title  = {Contrasting Various Notions of Convergence in Geometric Analysis},
  author = {Brian Allen and Christina Sormani},
  journal= {arXiv preprint arXiv:1803.06582},
  year   = {2020}
}

Comments

7 figures by Penelope Chang of Hunter College High School. v2: Referee comments addressed. To appear in Pacific Journal of Mathematics v3: Further clarification of Remark 2.2 provided