Quantifying Homology Classes II: Localization and Stability
Computational Geometry
2011-11-10 v2 Computational Complexity
Algebraic Topology
Abstract
In the companion paper, we measured homology classes and computed the optimal homology basis. This paper addresses two related problems, namely, localization and stability. We localize a class with the cycle minimizing a certain objective function. We explore three different objective functions, namely, volume, diameter and radius. We show that it is NP-hard to compute the smallest cycle using the former two. We also prove that the measurement defined in the companion paper is stable with regard to small changes of the geometry of the concerned space.
Keywords
Cite
@article{arxiv.0709.2512,
title = {Quantifying Homology Classes II: Localization and Stability},
author = {Chao Chen and Daniel Freedman},
journal= {arXiv preprint arXiv:0709.2512},
year = {2011}
}
Comments
The "companion paper" referred in this paper is another version of the paper "Measuring and localizing homology classes" by the same authors. Sept. 21st: authors name fixed